A system of pulleys is used to raise a load of bricks that weighs 1,700 newtons. The force applied to the pulley is 340 newtons. What’s the mechanical advantage of this machine? A. 1 B. 2 C. 5 D. 10
Question
A system of pulleys is used to raise a load of bricks that weighs 1,700 newtons. The force applied to the pulley is 340 newtons. What’s the mechanical advantage of this machine? A. 1 B. 2 C. 5 D. 10
Solution
The mechanical advantage of a machine can be calculated using the formula:
Mechanical Advantage = Output Force / Input Force
In this case, the output force is the weight of the load of bricks, which is 1700 newtons. The input force is the force applied to the pulley, which is 340 newtons.
So, the mechanical advantage is:
Mechanical Advantage = 1700 N / 340 N = 5
Therefore, the correct answer is C. 5.
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