Forces

A change in position.

• energy
• pivot
• force 
• motion

When a force moves an object over  a distance, ______________ is done.

• work
• load
• fulcrum 
• effort

The force that pulls all object to the earth.

• friction
• motion
• gravity
• energy

The force that resists the movement of objects against each other.

• brake
• friction
• lever
• energy

The ability to do work.

• energy
• effort
• push
• pull

A _____________ is any object that makes work easier.

• robot
• machine
• lever
• fulcrum

The weight of an object being moved.

• load
• pounds
• force
• effort

A bar that turns on a point.

• lever
• wedge
• pulley
• inclined plane

In a first-class lever, where is the effort in relation to the fulcrum and load?

• The effort is between the fulcrum and the load.
• The effort is close to the fulcrum.
• The effort is beside the load and fulcrum.
• T

Describe where the fulcrum is in relation to the effort and load in a second-class lever.

• The fulcrum is between the load and effort.
• The load is between the fulcrum and the effort.
• The effort is between the fulcrum and the load.
• There is no fulcrum in a second-class lever.