A uniform rod of length 1m having mass 1kg rests against a smooth wall at an angle of 300 with - Physics - Units and Measurements

Question

A uniform rod of length 1m having mass 1kg rests against a smooth
wall at an angle of 300 with the ground Calculate the forces
exerted by the wall and ground on the rod

Bakul Biswas · Accepted Answer

Dear Student,
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Given a rod of length 1m and weight 1×10=10N
The rod is making an angle of 30° with the horizontal groundso normal reaction of the ground on the rod is R making an angleof 60° with the rod
the weight of the rod 10N is acting vertically downwards soresolving 10N force along and perpendicular to the position of the rod, we get,10 sin60° =ROR    R = 10×32=53 N
Therefore force exerted by the ground on the rod is 53 N
 
The force exerted by the wall on the ladder is= Fwall =
mg cos30o = 1×10×32=53 N

Regards

A uniform rod of length 1m having mass 1kg rests against a smooth wall at an angle of 300 with the ground. Calculate the forces exerted by the wall and ground on the rod.