Work, Power, Energy and Machines.

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Which machine is used to split or cut objects?

• wedge
• screw
• pulley
• lever

What is the machine that helps to change the direction of a force?

• lever
• pulley
• inclined plane
• wheel and axle

Which machine is used to lift heavy loads with a rotating motion?

• lever
• inclined plane
• screw
• pulley

What is the machine that consists of a rope wrapped around a wheel?

• lever
• inclined plane
• screw
• pulley

Which machine is used to apply a force over a small area?

• lever
• wedge
• screw
• pulley

Which type of machine is this one?

• lever and wedge
• wedge and screw
• inclined plane and wedge
• pulley and lever

Which type of machine is this one?

• lever
• wedge
• screw
• pulley

Which type of machine is this one?

• lever
• wedge
• wheel and axle
• pulley

A force of 50 N is applied to move an object 10 m. What is the work done?

• 50 J
• 500J
• 5J
• 0.2J