Find the work done when an object of mass m rolls down to the ground in t
sec along a plane inclined at theta angle with the horizontal.
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Answer:
riction force, f=μR=μmgcosθ
μ is the coefficient of the friction.
Net force in forward direction, F=mgsinθ−μmgcosθ
Let the distance travelled by the body is ,S.
work done, W=F.S
W=(mgsinθ−μmgcosθ).S
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