Simple Machines
Makes a heavy object easier to lift by increasing the distance over which it is lifted.
Ramp
Force x Distance
Work
The ability to cause change
Energy
Energy stored in chemical bonds
Chemical Energy
Maika pushes a box 10 meters with a force of 20 newtons. How much work was done?
200 joules
A cylinder wrapped in a ramp.
Screw
Work divided by Time
Power
Law which states that that energy cannot be created or destroyed, only changed from form to form.
Law of Conservation of Energy
Energy that is stored
Potential Energy
How much force did Trent exert on a box if he pushed it 20 meters by doing 400 joules of work.
20 N
The location of the fulcrum determines the efficiency of this simple machine.
Lever
Output Force divided by Input Force
Mechanical Advantage
Transfer of energy which makes an object move
Work
Energy in the form of motion
Kinetic Energy
How much work is done on a text book with a force of 10 N when Gabe lifts it 10 meters?
100 joules
A crane is a large type of this simple machine.
Pulley
Work divided by force
Distance
The rate at which work is done
Power
The energy of anything that can fall
Gravitational Potential Energy
How far does a boulder with a force of 50 N travel if Ronan does 500 joules of work on it?
10 meters
This class of lever had it's fulcrum at one end, input force at the opposite end, and load in the middle.
Class 2 Lever
(Motion x velocity)2/2
Kinetic Energy
Measure of how much work put into a machine is changed into useful output work by the machine
Efficiency
Total amount of kinetic and potential energy in a system
Mechanical Energy
Dakota pushed a car with a force of 10,000 newtons but she was unable to move the car. How much work was done?
None!