7
lesson pretestMultiple Choice

Pretest

Question 7 • Physical Science

A machine has a mechanical advantage of 4 point 5 What force is put out by the machine if the force applied to the machine is 800 cap n ?

Answer
A
180 cap n
B
3600 cap n
C
805 cap n
D
0 point 0 0 6 cap n

Explanation

Mechanical advantage equals output force divided by input force. Multiply the input force by the mechanical advantage: 4.5 × 800 N = 3,600 N. The machine puts out 3,600 N, which is choice B.

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