FORCEWORK AND ENERGY

A force is

• pull /push upon an object.

• work.

• only to pull an object

• None of these

The picture shows ___________ force.

______ is one of the oldest source of power on Earth.

• Solar energy

• Hydro energy

• wind Energy

• None of these

Identify the Class Of Lever .

• CLASS I

• CLASS 2

• CLASS 3

• NONE

In Class 2 two lever ------ comes between effort and fulcrum.

The picture shows-

• Pulley

• Inclined Plane

• Wheel and axle

• Screw

The picture shows -

• Class1 lever

• wheel and barrow

• an inclined plane

• Class 2 lever

A _____ is made up of two inclined planes back to back.

Identify the Simple Machine.

• Pulley

• Wedge

• Screw

• Pulley

A wheel barrow is-

• class 1 lever

• class 2 lever

• class 3 lever

• None of these