Sarita lives on 3rd floor of building at the height of 15 m. She carries her school bag weighting 5.2 kg from the ground floor to her house. Find the amount of work done by her and identify the force against which she has done work. (g=10ms)
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Mass,m=5.2 kg
Acceleration due to gravity,g=10 m/s2
Displacement,h=15 m
Work done=mgh
=5.2*10*15
=780 J.
She has done work against the gravitational force of earth.
Acceleration due to gravity,g=10 m/s2
Displacement,h=15 m
Work done=mgh
=5.2*10*15
=780 J.
She has done work against the gravitational force of earth.
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