Work,energy, And Machines Flashcards
Ehat else can u transfer energy either thsn heating or cooling?
Work
Ehat does it mean by the wird ‘work’
When you lift a book you do eork against gravity
When you slidr yhr book you do work against friction
What the formula for work done?
Work done=force x distance
A simple machines make its easier to…
Lift things, move things or turn things
Ehat do most people use to open a tin of paint?
Levers
What can you use to open the tin with much smaller force?
Screwdriver
What is a lever?
A force multiplier
How is a lever a force multiplier?
Your hand moves down and the lever moves up.
Your hand moves a much further distnace thsn the other end of the lever
Ehat is another simple machine?
Gear system
What are gears a bit like?
Levers that are rotating
What can u use a gaer system for?
Increase the force, change direction or go faster
Getting something for nothing?
A small force acting over a bjg distance produces a big force. The bug force can knly move a small distnace. You cannot get something for nothing
