The Lever shown in the figure is:

1. Class I lever
2. Class II Lever
3. Class III Lever
4. None of these

Which class of levers have effort and load on the same side of fulcrum

1. Class I lever
2. Class II Lever
3. Class III Lever
4. Class II or class III Lever

(a) What do you understand by a simple machine?

(b) State the principle of an ideal machine.

Name a machine for each of the following use —

(a) to multiply the force,

(b) to change the point of application of force,

(c) to change the direction of force,

(d) to obtain the gain in speed.