POE 24 Semester Review

Front

What type of simple machine does this image best represent? Options: wheel and axle, gear, lever, inclined plane

Back

wheel and axle

Front

Which is a first class lever?

Back

Front

If MA is greater than 1:

Back

Proportionally less effort force is required to overcome the resistance force.

Front

What is the mechanical advantage of a crane if Mrs. Cruz lifts a 2 lb bag of chocolates with a force effort of 1.5 lb?

Back

1.33

Front

How could I reduce the effort force needed to lift the load? Options: move the fulcrum away from the load, move the fulcrum closer to the load, place the fulcrum in the middle

Back

move the fulcrum closer to the load

Front

To figure out the MA of an inclined plane, you would: divide ramp height by ramp length, divide ramp length by ramp height, multiply ramp height by ramp length, add all of the numbers together.

Back

divide ramp length by ramp height

Front

A ______ is a grooved wheel with a rope running along the groove.

Back

pulley

Front

The metal piece used to split a log is an example of what simple machine? Options: wedge, pulley, screw, lever

Back

wedge

Front

What is in the middle on a first class lever?

Back

Fulcrum

Front

A boy pushes a lever down 2 meters with a force of 75 Newtons. The box the other end weighs 50 Newtons and moves up 2.5 meters. What is the efficiency of this machine?

Back

83.3%