Question

To lift a load of 100 kg a distance of 1 m an effort of 25 kg must be applied over an inclined plane of length 4 m. What must be done to lift the load 2 m, using the same effort?

A) Use an inclined plane of length 8 m.
B) Use an inclined plane of length 2 m.
C) Use an inclined plane of length 10 m.
D) Use an inclined plane of length 16 m

Answer 1

Hello! :)

Answer: A.

Explanation: To raise the load over 2 m using the same effort, an inclined plane with the same mechanical advantage as the original one should be used. So use an inclined plane of length 8 m.

Hope this helps!

Answer 2

I think the answer is A.