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Grade: 11
        An object of mass m is tied to a string of length l and a variable horizontal force is applied on it , which starts at zero and gradually increases ( it is pulled extremely slowly so that equilibrium exists at all times ) until the string makes an angle theta with the vertical . Work done by the force F is
3 years ago

Answers : (1)

Shaswata Biswas
132 Points
							Th work done W =  ,|`(integration) F.l.dtheta. Here the displacement by the action of force is equal to ldtheta.
						
3 years ago
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