100 likes | 232 Views
SIMPLE MACHINES. EQ: How do machines help us do work?. When we have to move a real heavy load, we have to use a great deal of force to push it, because of friction. This requires us to do work , which is the use of force to move an object over a distance of time. SIMPLE MACHINES
E N D
SIMPLE MACHINES EQ: How do machines help us do work?
When we have to move a real heavy load, we have to use a great deal of force to push it, because of friction. • This requires us to do work, which is the use of force to move an object over a distance of time
SIMPLE MACHINES • A machine with a few or no parts that you apply one force. • Pulley • Lever • Wheel and Axle • Inclined Plane • Screw • Wedge
Note – Wheel and Axle is the only simple machine that does not change the direction of a force. WORKING SMARTER & NOT HARDER!
REVIEW • What is work? • the use of force to move an object over a distance of time • What is a simple machine? • A machine with a few or no parts that you apply one force. • In order for a wheel and axle to be a simple machine, what is required? • There has to be a wheel, an axle, and they have to turn together. • Most importantly, it makes life easy for who? • OURS