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