Questions
A particle is fired with speed u making angle θ with the horizontal. Its potential energy at the highest point is
a
12mu2sin2θ
b
12mu2cos2θ
c
12mu2
d
12mu2sin22θ
detailed solution
Correct option is A
The vertical component of velocity is reduced to zero. The corresponding kinetic energy is converted into potential energy P.E. =mgH = mgu2sin2θ2g=12mu2sin2θTalk 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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