A body of mass m was slowly hauled up the hill as shown in the fig. by a force F which at each point was directed along a tangent to the trajectory. Find the work performed by this force, if the height of the hill is h, the length of its base is I and the coefficient ot friction is `mu`.
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A body of mass m was slowly hauled up the hill (figure) by a force F which at each point was directed along a tangent to the trajectory. Find the work performed by this force, if the height of the hill is h, the length of its base l, and the coefficient of friction k.

A body of mass m was slowly pulled up the hill by a force F which at each point was directed along the tangent of the trajectory. All surfaces aresmooth. Find the work performed by this force.

A body of mass m was slowly pulled up the hill by a force F which at each point was directed along the tangent of the trajectory. All surfaces aresmooth. Find the work performed by this force.

A body of mass m was slowly pulled up the hill by a force F which at each point was directed along the tangent of the trajectory. All surfaces are smooth. Find the work done by this force

A body of mass m was slowly pulled up the hill by a force F which at each point was directed along the tangent of the trajectory. All surfaces are smooth. Find the work done by this force

A body of mass M was slowly hauled up a rough hill by a force F which at each point was directed along a tangent to the hill. Work done by the force

A body of mass M was slowly hauled up a rough hill by a force F which at each point was directed along a tangent to the hill. Work done by the force

A body of mass m is slowly hauled up a rough hill as shown in fig by a force F which acts tangential to the trajectory at each point. Find the work performed by the force, if the height of hill is h, the length of its base l and coefficient of friction between the body and hill surface is m. What is the work done if body is moved along some alternative path shown by the dotted line, friction coefficient being same.

By application of a force F , a body of mass m is raised to the top of a hill .F is tangential along the whole path. If the height of the hill is h, the length of the base of the hill is l , and the coefficient of friction is mu , then find the work done.

A body of mass m is hauled from the Earth's surface by applying a force F varying with the height of ascent y as F=2(ay-1)mg , whera a is a positive constant. Find the work performed by this force and the increment of the body's potential energy in the gravitational field of the Earth over the first half of the ascent.