Which statement is true about a machine?
A machine can make work easier by decreasing the force and distance required.
A machine can make work easier by decreasing the amount of work required.*****
A machine can make work easier by decreasing the force required.
A machine can make work easier by decreasing the distance required.
NO !!!!!
Oh hmmmm
ok i think it is A
work is force times distance which is energy, like in Joules = Newtons * meters
if you pull with less force, you have to move a greater distance to put the same energy in
Work done = force * distance
if you decrease distance you must increase force
but
if you increase distance, you can DECREASE force
put the rope a long way to lift the cargo a short way
You are not strong enough to lift it with your arms, so you use a pulley system. you exert a small force for a long distance on the rope to left a large force a small diatance
work in = work out
small force in * large distance in = big force out * small distance out
OHH so that means a machine makes the distance smaller
you move long distance with small force
object moves short distance with big force
You did it because you were not strong enough to generate the necessary force without the simple machine. You did not mind pulling the rope ten feet to lift the heavy thing one foot.
yes
so look for
............. easier by decreasing the force required