Question

A simple machine :

• A. magnifies the movement only
• B. enables to do more work by less effort
• C. changes the direction of force in all circumstances
• D. none of the above

Answer 1

Answer: (B)

enables to do more work by less effort

$\text{Solution}:$

1. A simple machine is a mechanical device that changes the direction or magnitude of a force.

2. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.

$\text{Hence B is the correct option}$