Solve this: Q 18 A mason worker throws the bricks to a height of 10 m, at which the - Physics - Work Energy And Power

Question

Solve this:
Q 18 A mason worker throws the bricks to a height of 10 m, at which
the bricks reach with a velocity of 6 m s - 1 The percentage of
energy he is wasting is nearly (g = 10 m s - 2 )
1) 15 %
2) 18 %
3) 220 %
4) 36 %

Vijay Shankar Yadav · Accepted Answer

Dear Student,
Total  work done by mason worker=mgh+12mv2=100m+18m=118mand wasting work =12mv2=18mso percentage of waste energy =18118×100=15
25=15%
Regards

Solve this: Q.18. A mason worker throws the bricks to a height of 10 m, at which the bricks reach with a velocity of 6 m s - 1 . The percentage of energy he is wasting is nearly (g = 10 m s - 2 ) 1) 15 % 2) 18 % 3) 220 % 4) 36 %

Solve this:
Q.18. A mason worker throws the bricks to a height of 10 m, at which the bricks reach with a velocity of 6 $m s^{- 1}$ . The percentage of energy he is wasting is nearly (g = 10 m $s^{- 2}$ )
1) 15 %
2) 18 %
3) 220 %
4) 36 %