Question: A person is pulling a mass m=2kg slowly from ground on a fixed rough hemispherical surface upto the top of the hemisphere with the

A person is pulling a mass m=2kg slowly from ground on a

A person is pulling a mass m=2kg slowly from ground on a fixed rough hemispherical surface upto the top of the hemisphere with the help of a light inextensible string. If the work done by the person is 10z joules, then find z. (R=1m and] H=0.5 R=1m

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