Physical Science Ch. 13 section 2

A lever in which the fulcrum is located between the input force and the output force.

• first class lever

• second class lever

• third class lever

A lever in which the output force is located between the input force and the fulcrum.

• first class lever

• second class lever

• third class lever

A lever in which the input force is located between the fulcrum and the output force.

• first class lever

• second class lever

• third class lever

What is the mechanical advantage of a lever with an effort arm of 16 cm and an output arm of 2 cm?

• 8

• 32

• 0.125

What is the ideal mechanical advantage of a wheel with a radius of 30 cm fixed to an axle with a radius of 5 cm?

• 150

• 0.16

• 6

What is the mechanical advantage of a ramp that is 12 meters long and 4 meters high?

• 48

• 3

• 0.25

What is the mechanical advantage of a wedge if the length of the slope is 10 cm and the thickness is 5 cm?

• 2

• 50

• 0.5

Is the pulley in the picture a fixed or movable pulley?

• fixed

• movable

Is the pulley in the picture a fixed or movable pulley?

• fixed

• movable

What is the mechanical advantage of the pulley in the picture?

• 1

• 2

• 3

• 4