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प्रश्न
A body of mass 1 kg is thrown vertically up with an initial speed of 5 m s-1. What is the magnitude and direction of force due to gravity acting on the body when it is at its highest point? Take G = 9.8 n kg-1
उत्तर
Mass of body = 1 kg
Initial speed = 5 m/s
Acceleration due to gravity = 9.8 N/kg (vertically downwards)
Force = mass x acceleration
= 1 x 9.8 = 9.8 N = 1 kgf
9.8 N or 1 kgf force acts vertically downwards.
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