Question

HELP!!! HURRY DUE BY 4:30!!!

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. Eliminate 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

Its 8 meters,
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Answer 2

Work = force * distance.
You must produce twice as much energy as we are lifting the weight twice as high.
But because you aren't increasing the force, you need to increase the length of the ramp instead.
The new length will be twice as great as the previous length.
So 8 metres is required.

Hope this helps.