Class 1 Lever When MA>1

Q.

Why is the mechanical advantage of a second class lever always greater than 1, whereas that of a third class lever is always less than 1?

Q.

Which one of the following class I lever has the mechanical advantage more than 1?

1. Seesaw

2. A pair of scissors

3. Claw Hammer

4. A physical balance

Q.

Why is the mechanical advantage of a class II lever always more than 1?

1. The effort arm is always longer than the load arm.

2. The effort arm is always smaller than the load arm.

3. There is no load.

4. The effort arm is always equal to the load arm.

Q.

Answer the following question in one word each

Name the class of levers that has a mechanical advantage of more than one.