Question

what is the mechanical advantage of a crowbar when a worker uses 10N of force to pry open a window that has a resistance of 500N?

Answer 1

Answer:50

Step-by-step explanation:

Answer 2

50

Step-by-step explanation:

The mechanical advantage of a machine is given by

`MA=(F_(out))/(F_(in))`

where

`F_(out)` is the output force

`F_(in)` is the input force

For the crowbar in this problem,

`F_(in)=10 N` is the force in input applied by the worker

`F_(out)=500 N` is the force that the machine must apply in output to overcome the resistance of the window and to open it

Substituting into the equation, we find

`MA=(500)/(10)=50`