Explanation:
It is given that,
Mechanical advantage of a ramp is 4
It is used to move a 38 N load
We need to find the force needed to push the load up the ramp. The mechanical advantage is equal to the ratio of output force to the input force. We have output force as 38 N
So,
[tex]4=\dfrac{38}{F_i}\\\\F_i=\frac{38}{4}\\\\F_i=9.5\ N[/tex]
So, the force of 9.5 N is needed to push the load up the ramp.
