Question

A scientist is using a pulley in a laboratory. If the resistance force is 40 Newtons and the effort force is 20 Newtons, what is the mechanical advantage?

A. 1
B. 2
C. 3
D. 4
Not math but.. i would appreciate the help :D
Wouldnt it be B?... I dont know how to even find the answer ^.^

Answer 1

I think you're right
Mechanical advantage is defined as output force/input force
since the machine is a pulley, the input force would be 20 N but the output force would be 40 N based on the nature of the machine
so 40N/20N = 2 which is B

Answer 2

Yay!! Wow thanks! (:

Answer 3

np