a body of mass 2kg thrown vertically upward with an initial velocity of 20m/s .what will be its potential energy at the end of 2sec ? what is the maximum value of potential energy
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m=2kg
u=20m/s v=0
g=-10m/s
by second equation of gravitation
h=ut+1/2gt^2
h=20×2+1/2×-10×4
40-20=20
h=20
hence, Ep=mgh
Ep=2×10×20
=400j
u=20m/s v=0
g=-10m/s
by second equation of gravitation
h=ut+1/2gt^2
h=20×2+1/2×-10×4
40-20=20
h=20
hence, Ep=mgh
Ep=2×10×20
=400j
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