Simple Machines

Work = force x _______________

• energy

• height

• distance

• sunlight

Work is being done mowing the lawn.

• True

• False

Is work being done when pushing on a wall?

• Yes

• No

A screw is an inclined plane wrapped around a cylinder.

• True

• False

The force you exert on the object is called the ________ force

• output

• input

What is a simple machine that has 2 incline planes back to back?

• incline plane

• screw

• fulcrum

• wedge

The position of the _______ determines what lever it is.

• Joule

• fulcrum

• wedge

• screw

Incline planes.....

• are sloping surfaces

• make our life easier

• use less effort but more distance

• all of the above

Which type of lever is this with the fulcrum in the middle?

• First

• Second

• Third

If you can't lift the load with a 1st class lever, you should...

• move the fulcrum farther from the load

• move the fulcrum closer to the load