PHYSICS TRUE / FALSE

An inclined plane always has the mechanical advantage of more than 1.

A pulley changes the direction of force.

All levers are force multipliers.

In an ideal machine, work done on load is equal to the work done by effort.

A machine performs work by itself.

A boy does work while pushing a wall.

Work done by a machine is always more than the work done on a machine.

A sewing needle is a wedge type simple machine.

A rotation spindle tap is an example of a wheel-and-axle arrangement.

A single movable pulley is a pulley that has its axis of rotation fixed.

The effort required to insert a screw into wood is less than that needed to insert a nail into wood.

A screw is a special case of an inclined plane.

The load and effort can act at a single point in a lever.

There are four types of simple machines.