A 5kg object is raised through a height of 4m. Work done by the force of gravity
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Mass of the object = 5 kg
Acceleration due to gravity = 9.8 m/s^2
Displacement (h) = 4 m
Since, the force of gravity is downward and the displacement is in upward direction. Hence, the work done by the gravity will be negative.
Work done by gravity = - mgh
Work done by gravity = - 5 × 9.8 × 4
Work done by gravity = - 196 Joules
Hence, the work done by gravity will be -196 Joules
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Work Done here is change in potential energy
:.W=-mgh
=>-5kg×9.8m/s^2×4m
W=-196Joule
-ive sign indicates displacement opposite to direction of force acting .
:.W=-mgh
=>-5kg×9.8m/s^2×4m
W=-196Joule
-ive sign indicates displacement opposite to direction of force acting .
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