Question

B. Name the following:
1 a rigid bar which can rotate freely about a fixed
point or a fixed line
2. the ratio of load to effort of a machine
3. the work done on a machine
the fixed point about which a lever can turn
5. any plane surface that is tilted or inclined to the horizontal​

Answer 1

Explanation:

• A lever is a rigid bar free to rotate about a fixed point called the fulcrum.

• Ratio of load to the effort is k/a mechanical advantage of the machine. The ratio of the velocity of effort to its velocity of the load is called its velocity ratio of machine.

• May or may not be equal to the work produced but never losses

• The fixed point that a lever rotates around is called the fulcrum.

• An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.