A body of mass 2 kg is projected at 20 m/s at an angle 60 above the horizontal. Power due to the gravitational force on the block at its highest point is :
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Explanation:
if the body is projected at an angle of 60 degree with the horizontal then the maximum height attained by the object is
h=u^2sin^2theta/2g
=400×3/4×2×10
=15 metre
at the maximum height the gravitational force will vertically downward on the object the value of gravitational force will be mass X acceleration due to gravity
f=2×10
=20N
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