(Prob. 1,8 A heavy rope, 10 m long, weighs 0.5 N/m and hangs over the edge of a building 100 m high. (a) How much work is done in pulling the rope to the top of the building? (b) How much work is done in pulling the top half of the rope to the top of the building? (The bottom half of the rope is still hanging.)

A 5 m rope weighing 0.50 kg per m is hanging from the ceiling. Find the work required to lift the bottom end of the rope to the ceiling so that it is level with the upper end.

A spring has a natural length of 6 m. If a 4-N force is required to keep it stretched to a length of 10 m, how much work W is required to stretch it from 6 m to 18 m? (Round your answer to two decimal places.) W = 18 X J

A 2 m rope weighing 0.75 kg per m is hanging from the ceiling. Find the work required to lift the bottom end of the rope to the ceiling so that it is level with the upper end

Suppose that a spring has a natural length of 10 cm, and that it requires a force of 20 Newtons to keep it stretched to a length of 20 cm. How much work is required to stretch the spring from 10 cm to 20 cm?

How much work is done by boy pulling his sister 33m in a wagon as shown in the figure below? (A) no friction acts on the wagon and mass of wagon and girl is 35kg (assume d=33m and F=56N.) (B)Assume a coefficient of friction of 0.025. How much word is done by: (i) The net force (ii) friction. (Iii) normal force

A man pushes the lawnmower on a level lawn with the force of 197 N and if 34% of this force is directed forward how much work is done by the man in pushing the mower 4.7 M?

Calculate the work done to lift a 34 kg box against gravity a height of 7 meters.

Suppose that 2 J of work is needed to stretch a spring from its natural length of 32 cm to a length of 49 cm. How much work is needed to stretch the spring from 40 cm to 44 cm?