Simple machines

A pulley is a simple machine that helps us in changing _____

• work

• direction of force

• downward force

• force

Regular oiling and polishing decreases the life of a machine

• False

• True

Which is not a type of simple machine?

• Spring

• Screw

• Pulley

• Wedge

Stairs

• Pulley

• Wheel and axle

• Inclined plane

• Lever

Identify the simple machine

• Wedge

• Pulley

• Screw

• Wheel and axle

An axe is an example of

• Inclined plane

• Screw

• Pulley

• Wedge

Which of the following does a simple machine do?

• Allows the users to apply less force over a longer distance

• change the direction of the applied force

• reduce the amount of force needed to do work

• all of the above

What is load?

• The opposing force

• The force applied

• The work done on the machine

• The work done by the machine

Lightbulb

• Lever

• Inclined plane

• Plastic

• Screw