Questions
A rod of mass m and length I is lying on a horizontal table. Work done in making it stand on one end will
be
a
mgl
b
mgl2
c
mgl4
d
2mgl
detailed solution
Correct option is B
Centre of mass of the rod moves a height, h=l2.Work done, W = mgh = mgl / 2Talk to our academic expert!
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A simple pendulum is swinging in a vertical plane. The ratio of its potential energies when it is making angles and with the vertical is,
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