Simple Machines, Forces and Energy

Which of the following are some types of simple machines?

• Pulley

• Lever

• Apple

• Screw

What is a simple machine?

• A simple machine is a machine in which the structure of the machine is really easy.

• A simple machine is a machine in which the structure of the machine is really hard.

• A simple machine is a machine in which the structure of the machine is really wierd.

• None of the above

What is this simple machine?

• Lever

• Pulley

• Wedge

• Screw

Which of the following is not a force ?

• Gravitational

• Muscular

• Kinetic

• Elastic

Which type of force Earth is using in order to attract objects towards it?

• Magnetic force

• Gravitational Force

• Muscular force

• Electrostatic force

Which type of energy is produced by the object's motion ?

• Heat energy

• Kinetic energy

• Hydro energy

• Solay energy

What class of lever is this ?

• Class I

• Class II

• Class III

If a boy is pushing a cardboard box, what kind of force is he using?

• Gravitational

• Muscular

• Frictional

• Elastic

Who is the one that is stopping a ball moving automatically ?

• Gravity

• Another person

• Friction

• Water

What kind of a simple machine is a axe ?

• Pulley

• Screw

• Wedge

• Lever