A student is able to lift a bag containing books of 20 `kg_(wt)` by applying a force of 5 `kg_(wt)` Find the mechanical advantage.

A boy able to lift a bag containing books of 30 N placed at an end of the see-saw by applying a force of 5 N at another end. Find the mechanical advantage of the see-saw.

A steel wire of diameter 1 mm, and length 2 m is stretched by applying a force of 2.2 kg wt. the strain is

Find the effort required to lift a load of 50 kg_(wt) using a simple machine if its mechanical advantage is

The pulley system drawn lifts a load of 150 N when an effort of 60 N is applied. Find its mechanical advantage.

The pulley system drawn lifts a load of 150 N when an effort of 60 N is applied. Find its mechanical advantage.

A steel wire of diameter 1 mm, and length 2 m is stretched by applying a force of 2.2 kg wt. the extension produced in the wire is

An inclined plane of length 2 m is used to lift a load of 100 kg_(wt) . The force required to lift the load is 20 kg_(wt) . The height through which the load is lifted is ______ m

A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 20 kg wt in a direction inclined at 60^(@) to the ground , find the work