Question

Write function of machines and explain any three out of them.

Answer 1

Answer:

1. Applying force at convinient point

2. Applying force at a convenient direction – It is difficult to lift the bucket full of water directly,but it becomes very easy when force applied in downward direction using a pulley

3. By applying small effort to lift large loads – In this case,machine is said to be used as a speed multiplier.

For example : a screw jack used to lift a car or a truck.

4. To change the speed of motion of the body – In such case, machine is said to be used as a speed multiplier.

for example : Gears in the automobile

Hope that helps you :)