A boy pushes wall. The work done by the boy is

A boy pushes a toy box 2.0 m along the floor by means of a force of 10 N directed downward at an angle of 60^(@) to the horizontal.The work done by the boy is

A boy of mass 40 kg climbs vertically upwards on a coconut tree to a height of 10m. Calculate the work done by the boy.

A boy of mass m climbs up the stairs of vertical height h. (a) What is the work done by the boy against the force of gravity ? (b) What would have been the work done if he uses a lift in climbing the same vertical height ?

A moving railway compartment has a spring of constant k fixed to its front wall. A boy stretches this spring by distance x and in the mean time the compartment moves by a distance s. The work done by boy w.r.t. earth is

A moving railway compartment has a spring of constant k fixed to its front wall. A boy stretches this spring by distance x and in the mean time the compartment moves by a distance s. The work done by boy w.r.t. earth is

A boy carries a 10 kg load from point C to A along the path CA as shown in the figure. What is te work done by the boy against the gravitational pull of the earth ?

A boy of mass 55kg rus up a filight of 40 stairs, each measuring 0.15m Calculate the work done by the boy.

In a children\'s park, there is a slide which has a total length of 10 m and a height of 8.0 m figure. Vertical ladder are provided to reach the top. A boy weighting 200 N climbs up the ladder to the top of the slide and slides down to the ground. The averages friction offered by the slide is three tenth of his weight. Find a. the work done by the ladder on the boy as he goes up. b. the work done by the slide on the boy as he comes down. Neglect any work done by forces inside the body of the boy.