A block of mass 2 ~kg is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at 30^ . Then the work done by the tension in the rope in pulling it a distance 4 ~m along the inclined plane in joule is ( . a

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A block of mass 2 ~kg is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at 30^ . Then the work done by the tension in the rope in pulling it a distance 4 ~m along the inclined plane in joule is ( . acceleration due to gravity =10 ~ms ⁻² )

Quantrex Academy · Accepted Answer

Correct answer: A. 40

As V= constant aligned & T = mg & T =2 10 30^ & T =10 ~N aligned So, work done = T x =10 4=40 ~N

A block of mass 2 ~kg is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at 30^ . Then the work done by the tension in the rope in pulling it a distance 4 ~m along the inclined plane in joule is ( . acceleration due to gravity =10 ~ms ⁻² )

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