As shown in the figure a person is pulling a mass 'm' from ground on a fixed rough hemispherical surface upto the top of the hemisphere with the help of a light inextensible string. Find the work done ( in Joules ) by tension in the string if radius of hemisphere is R and friction coefficient is μ. Assume that the block is pulled with negligible velocity ( take μ = 0.1, m = 1 kg, g = 10 m/s2, R = 1 m ).

As shown in the figure a person is pulling a mass 'm' from ground on a

1.	As shown in the figure a person is pulling a mass 'm' from ground on a fixed rough hemispherical surface upto the top of the hemisphere with the help of a light inextensible string. Find the work done ( in Joules ) by tension in the string if radius of hemisphere is R and friction coefficient is μ. Assume that the block is pulled with negligible velocity ( take μ = 0.1, m = 1 kg, g = 10 m/s2, R = 1 m ).
Answer» Explanation: Use work energy theoremHere, work done by TENSION work done by gravity work done by FRICTIONAL force final KINETIC energy initial kinetic enegychange in kinetic energy zero.Proceed as GIVEN in attachment

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