7.2 Simple Machines

What is the primary function of simple machines?

• To create energy

• To change the direction or magnitude of a force

• To increase friction

• To generate electricity

Which of the following is NOT a type of simple machine?

• Lever

• Inclined Plane

• Pulley

• Motor

What is the mechanical advantage of a simple machine?

• The ratio of output force to input force

• The difference between input and output forces

• The ratio of input force to output force

• The sum of input and output forces

Which simple machine consists of a beam resting on a support?

• Wedge

• Pulley

• Screw

• Lever

What is the function of a wedge?

• To rotate objects

• To roll objects

• To cut or split objects

• To lift objects

Which simple machine is used in a flagpole?

• Lever

• Pulley

• Inclined Plane

• Wheel and Axle

What is the principle behind a screw?

• Converting linear motion into rotational motion

• Converting rotational motion into linear motion

• Decreasing distance

• Increasing speed

Which simple machine is a ramp an example of?

• Wedge

• Screw

• Lever

• Inclined Plane

Which simple machine is used in a car jack?

• Lever

• Pulley

• Wheel and Axle

• Screw

What is the role of torque in simple machines?

• To provide rotational motion

• To increase distance

• To decrease force

• To increase speed