5. Suppose the mechanical advantage of a machine is 4, and the input force is 20 N. What is the output force?
A. 5 N
B. 16 N
C. 80 N
D. 24 N

C. 80N

Explanation:

Mechanical advantage

= Output force /input force

Given

M.A = 4

Input force = 20N

Output force = ?

Therefore

4 = output force /20

Cross multiply

Output force = 20 x 4

= 80N

80N

Explanation:

Mechanical advantage=4

Input force=20N

Output force=?

mechanical advantage(ma)=(output force) ➗ (input force)

4=(output force) ➗ 20

Output force=4 x 20

Output force=80N

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