+ do now why do we use ramps to move heavy objects to higher places?

+Do Now

Why do we use ramps to move heavy objects to higher places?

+

Simple Machines

+Work

Work: the amount of force applied to an object to move it a distance

Work = Force x Distance

+Simple Machines

A machine makes work easier by changing at least one of three factorsDistanceForceDirection

+Two Types of Machines Exist: Simple Machines and Compound Machines

+Compound Machines

A compound machine is made of 2 or more simple machines.

+GP1

What type of simple machine is pictured here?

a) Pulley

b)Wheel and Axle

c) Inclined Plane

d)Lever

+GP2

What type of simple machine is pictured here?

a) Pulley

b)Wheel and Axle

c) Inclined Plane

d)Wedge

+GP3

What type of simple machine is pictured here?

a) Pulley

b)Wheel and Axle

c) Inclined Plane

d)Wedge

+GP4

What type of simple machine is pictured here?

a) Pulley

b)Wheel and Axle

c) Wedge

d)Lever

+GP5

What type of simple machine is pictured here?

a) Pulley

b)Wheel and Axle

c) Inclined Plane

d)Lever

+GP6

What type of simple machine is pictured here?

a) Pulley

b)Screw

c) Inclined Plane

d)Lever