mechanical advantage and efficiancy Flashcards
1
Q
how do machines make work easier
A
they can redistribute work, change the direction of input force, and increase or decrease force
2
Q
what is mechanical advantage
A
a quantity that measures how much a machine multiplies
3
Q
mechanical advantage equation
A
MA= output force/ input force or input distance/ output distance (no units)
4
Q
machine efficiency equation
A
e= useful work output/ work input x 100
5
Q
is 100% efficiency possible
A
no
