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Home Q & A Board Science-Related Homework Help High School Level Science
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zenmamma zenmamma
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A year ago
A construction worker uses a board and log as a lever to lift a heavy rock. If the input arm is 5 meters long and the output arm is 2 meters long, what is the mechanical advantage of the lever?

a
7
 b
0.4
 c
10
 d
2.5
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dt6
wrote...
#1
A year ago
The mechanical advantage of the lever can be calculated by dividing the length of the input arm by the length of the output arm.

So, mechanical advantage = input arm length/output arm length = 5/2 = 2.5

Therefore, the answer is d) 2.5.
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