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Almas asked a question
Subject: Physics, asked on on 7/12/16
A ball of mass m is thrown upwards with a velocity v. If air exerts an average resisting force R, the velocity with which the ball returns to the thrower is ?
answer is v(mg - R/ mg + R)1/2 please explain how !!
Rashmika B asked a question
Subject: Physics, asked on on 26/1/17
11) The two ends A and B of a uniform rod of length L = 1 and mass m are moving with velocities vA and vB as shown. The angular velocity of the rod is.
a) 20 rad/sb) 25 rad/sc) 30 rad/sd) 50 rad/s
Kalyan asked a question
Subject: Physics, asked on on 29/7/16
the moment of inertia of a uniform rod about an axis through through its centre and perpendicular to it is 1/12 ML2. The rod is bent in the plane perpendicular to the axis in the middle so that the two halves makes an angle of 600. the moment of inertia of the bent rod about the same axis would be
a)ML2/48
b)ML2/12
c)ML2/24
d)ML2/8root3
Almas asked a question
Subject: Physics, asked on on 9/12/16
A wheel of radius r consists of thin uniform rim of mass m and six thin spokes of mass m symmetrically kept. What is the moment of inertia of wheel about axis passing through edge and perpendicular to plane ?
Answer is 10mr​2 please explain how
Palak asked a question
Subject: Physics, asked on on 14/9/17
  • two putty balls of equal masses moving in mutually perpendicular directions with equal speed ,stick together after the collision .if the balls were intially moving with a velocity of 45underroot 2 m/s each feind the velocity of the combined mass after the collision
  •  
Prithesh Dwivedi asked a question
Subject: Physics, asked on on 2/9/16
There are four rods A,B,C and D of same length l but different mass density d, 2d, 3d, 4d respectively. These are joined to form a square with sides C and D along x and y axis of coordinate axes respectively. Find the coordinate of centre of mass of structure.

 
Ritik asked a question
Subject: Physics, asked on on 7/11/16
a disc of mass M and radius R has a concentric hole of radius r . its moment of inertia about an axis passing through the centre and perpendicular to the plane is ?
Almas asked a question
Subject: Physics, asked on on 7/12/16
​A particle is moving on a straight line x+y=2. Its angular momentum about origin is L = 3t + 2. Find force acting on the particle at t=2s.
Tks Arunachalam asked a question
Subject: Physics, asked on on 20/11/16
1) A disc of mass m0 rotates freely about a fixed horizontal axis through its centre. A thin cotton pad is fixed on its rim, which can absorb water. The mass of water dripping slowly onto the pad is μ per second. After what time will the angular velocity of the disc get reduced to half of its initial value.
(A) 2m0μ(B) 3m0μ(C) m0μ(D) m02μ


 
Samruddhi Amberkar asked a question
Subject: Physics, asked on on 6/9/17
Find The Angle Which Vector A=3i+6j+2k Makes With The Coordinate Axes
Rashmika B asked a question
Subject: Physics, asked on on 13/2/17
A uniform cube of side l and mass M rests on a rough horizontal table. A horizontal force F is applied normal to one of the faces at a point that is directly above the center of the face ata height 3l/4 above the base. Assuming that the cube may tip about an edgewithout slipping find the angular acceleration of the cube when F is equal to (a) mg/3 (b) mg
Manideep Varma asked a question
Subject: Physics, asked on on 18/11/16
at pressure of 24*10^5 dyne/cm^2,the volume of o2 is 10 liters and mass is 20gm .the r m s velocity will be?
Varun Gupta asked a question
Subject: Physics, asked on on 24/7/17
Calculate the Centre of Mass of a square plate of which a square-shaped part of it has been removed. (NO LINKS PLEASE)
Varun Gupta asked a question
Subject: Physics, asked on on 24/7/17
Derive the formula of Centre of Mass of a Solid Cone and a Triangular Plate
Ritik asked a question
Subject: Physics, asked on on 1/10/17
    A disk is undergoing pure rolling motion with speed V. The radius of the disk being R and mass M. Then the angular momentum of the disk about the bottom most point will be having magnitude equal to..? And angular momentum about topmost point will be equal to?  ​  
Palak asked a question
Subject: Physics, asked on on 15/9/17
a ball of mass 1 kg is projected horizontally as shown in the figure .assume that the collision between the ball and th ground is perfectly inelastic .find the kinetic energy of the ball in joules just after the collision.
Arvind asked a question
Subject: Physics, asked on on 12/5/17
​​A solid cylinder of radius 0.35 m is released from rest from a height of 1.8 m and rolls down the incline as shown. What is the angular speed of the cylinder when it reaches the horizontal surface?
Manasi Mujumdar asked a question
Subject: Physics, asked on on 5/10/17

A flywheel at rest is to reach an angular velocity of 24 rad/s in 8 second with constant angular
acceleration. The total angle turned through during this interval is?

 
Ritik asked a question
Subject: Physics, asked on on 1/10/17
When a uniform solid sphere mass m rolls from rest down an inclined plane such that its centre of mass descends through a height h, its translational kinetic energy will be  
Shivam Swami asked a question
Subject: Physics, asked on on 7/10/17
The axis X and Z in the plane of a disc are mutually perpendicular and ​Y-axis is perpendicular to the plane of the disc. If moment of inertia of the body about X and Y axes is 30 and 40 then moment of inertia about Z-axis will be? 
Sukh Preet asked a question
Subject: Physics, asked on on 28/7/16
derivation of inertia of moment of hollow sphere is quite large ...is their any easy way to do it ???
Krishna Vamsi asked a question
Subject: Physics, asked on on 23/6/16
the weight of pure naoh required to prepare 250cm^3 of 0.1n solution is
Shifa asked a question
Subject: Physics, asked on on 15/4/17
A particle of mass m is moving with constant velocity ˆ vi parallel to the x-axis at distance b from origin. The angular momentum of the particle about origin when particle is at (a, b) isA particle of mass m is moving with constant velocity ˆ vi parallel to the x-axis at distance b from origin. The angular momentum of the particle about origin when particle is at (a, b) is
Ritik asked a question
Subject: Physics, asked on on 1/10/17
  A rod of mass m and length 2R is fixed along the diameter of the ring of same mass m and radius R. the combined body is rolling without slipping along x-axis. Then the angular momentum about z-axis is having magnitude equal to    
Almas asked a question
Subject: Physics, asked on on 9/12/16
A particle P moving in circle with angular velocity w about center O. Then find angular velocity of particle about A (opposite to P) on circumference of circle​ (in terms of w)
Uma asked a question
Subject: Physics, asked on on 7/8/18
derive the maximum path by which a cyclist can bend while negotiating a curved path
Tks Arunachalam asked a question
Subject: Physics, asked on on 21/11/16
a solid cyclinder rolls down a rough inclined plane without slipping .as it goes ,the force of friction 
options
1-decreseases its mechanical energy 2-its translational kinetic energy 
3-rotational ke 4 -pe
Uma asked a question
Subject: Physics, asked on on 7/8/18
In a circus in the game of swing , the man falls on a net after leaving the swing but he is not injured, why ?
Pls answer it quickly
Thank you
Arvind asked a question
Subject: Physics, asked on on 7/1/17
A uniform rope of mass m per unit length, hangs vertically from a support so that the lower end touches table top. If it is released, then at that time a length y of the rope has fallen, the force on the table is equivalent to the weight of the length Ky of the rope. Find the value of K.   [3]
Guru Charan asked a question
Subject: Physics, asked on on 6/3/17
Question number 17.
Suroj Dey asked a question
Subject: Physics, asked on on 16/1/17
​A spring of mass m lies on a smooth table. One end of it is sclamped to the vertical wall and the other end is attached to a mass m and is placed on a horizontal frictionless surface. If the Block of mass M is given a velocity V towards right, find the KE of the system
Rashmika B asked a question
Subject: Physics, asked on on 15/3/17
Two circular discs of moment of inertia I1 ans I2,about their centre of masses are rotating individually about horizontal axes with angular speeds W1 and W2.If two discs are connected by a common shaft,deduce an expression for the common angular speed of the new system.Explain with reason,how the new rotational energy of the system changes.
Arvind asked a question
Subject: Physics, asked on on 12/5/17
A child is standing on the edge of a merry-goround that has the shape as a solid disk, as shown in the figure below. The mass of the child is 40 kilograms. The merry-go-round has a mass of 200 kilograms and a radius of 2.5 meters, and it is rotating with an angular velocity of ω = 2.0 radians per second. The child then walks slowly toward the center of the merry-go-round. What will be the final angular velocity of the merry-go-round when the child reaches the center ?
Kshitij Gaur asked a question
Subject: Physics, asked on on 24/10/16
Mention some practical applications which mak use of the property of momemt of inertia.
Almas asked a question
Subject: Physics, asked on on 8/4/17
Moment of inertia of a cube of mass m about an axis coinciding with one of the sides is ?
Almas asked a question
Subject: Physics, asked on on 29/11/16
18.A particle of mass m is attached to a disc of equal mass m by means of a slack string as shown.The disc is hinged about its centre C on a horizontal smooth table.The particle  is thrown on the horizontal table with initial velocity v.Find its velocity , when the string becomes taut.


1)  V

2)V3
3)2V3
4)3V4
Arvind asked a question
Subject: Physics, asked on on 8/4/17
 Plz solve the ques:
​A thick hollow sphere​ has an outer radius of Ro. It rolls down an inclined plane without slipping and its speed at bottom is Vnot. Now the incline waxed so that it is practically frictionless and sphere is observed to slide down. Speed at bottom is 5Vo/4. Radius of gyration of hollow sphere about an axis through its centre is ?
Tks Arunachalam asked a question
Subject: Physics, asked on on 20/11/16
13 th ques
​
Kashif Jamal asked a question
Subject: Physics, asked on on 17/4/18
Solve this.
Q.15. Starting from rest, a wheel has constant α = 3.0 rad/s2. During a certain 4.0 s interval, it turns through 120 rad. How much time did it take to reach that 4.0 s interval?
 
Almas asked a question
Subject: Physics, asked on on 29/11/16
Plz answer fast 

17. A cubical block of side a moving with velocity v on a horizontal smooth the plane as shown in figure. It hits a ridge at point O and starts rotating about the edge in contact with O. The angular speed of the block after it hits O is 

(1) 3v4a(2) 3v2a(3) 32va(4) Zero
Arvind asked a question
Subject: Physics, asked on on 12/5/17
​A uniform disc of radius 1.2 m and mass 0.6 kg is rotating at 25 rad/s around an  axis that passes through centre  and perpendicular to the disc. Rod makes contact with rotating disc with force 4.5 N at point 0.75 m from axis of rotation. Disc is bought to stop in 5 s. What is coefficient of kinetic friction of two materials in contact?   [0.64]
Aryan asked a question
Subject: Physics, asked on on 6/8/17
How could we say that the centre of mass remains at it's position even if the body breaks into two pieces. I am trying to get feel of this fact but everytime I felt this fact as contrived ! . Plz hlp me.
Ishika Kotwani asked a question
Subject: Physics, asked on on 22/7/17
whentotakemanddmasdenominator
Arvind asked a question
Subject: Physics, asked on on 12/5/17
A ball of mass M and radius R has a moment of inertia of I = 2/5 MR2. The ball is released from rest and rolls down the ramp with no frictional loss of energy. The ball gets projected vertically upward of a ramp as shown in the diagram, reaching a maximum height ymax above the point where it leaves the ramp. Determine the maximum height of the projectile ymax in terms of h.
Syed Ayaan asked a question
Subject: Physics, asked on on 26/9/16
A chain of mass 0.80 kg and length 1.5 m rests on a rough surface table so that one of its ends hangs over the edge the chain starts sliding off the table all by itself provided the overhanging part equals n=1+3 of the chain length . What will be the total forces pperofrmed by the friction forces chain ?
Ritik asked a question
Subject: Physics, asked on on 7/11/16
the radius of gyration of solid dphere of radius R about a certain axis is R . the dist of this axis from the centre is 
Krishna asked a question
Subject: Physics, asked on on 4/10/18
the radius of earth is reduced to half suddenly ( not due to any external torque) how long will the length of the day be decreased if earth is a perfect sphere???(mi = 2/5mr^2)
Tks Arunachalam asked a question
Subject: Physics, asked on on 20/11/16
3 and 4 th ques plzzz with proper sol ..from meritnation experts 
 
Siddhant Kole asked a question
Subject: Physics, asked on on 3/8/17

all the masses do not have the same perpendicular distance from the plane....here max distance is R...
Palak asked a question
Subject: Physics, asked on on 15/9/17
q13
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