Lever and its types

A lever is a bar that rests on a turning point called __________.

• stone

• Fulcrum

• triangle

___________ is the object which the lever tries to move.

• effort

• load

• fulcrum

__________ is the force applied to move the load.

• load

• fulcrum

• effort

There are altogether _______ classes of lever.

• Two

• Three

• Five

In a first class lever, __________ is always in the middle.

• effort

• load

• fulcrum

In a second class lever, ____________ is always in the middle.

• effort

• fulcrum

• load

In a third class lever, _____________ is always in the middle.

• fulcrum

• load

• effort

Human arm lifting weight is an example of:

• First class lever

• Second class lever

• Third class lever

Wheel barrow can be called as an example of _____________.

• First class lever

• Second class lever

• Third class lever

A crowbar is an example of ________________ .

• First class lever

• Second class lever

• Third class lever.