Tom needs to load a tire into a moving truck using an inclined plane. He has two boards—one that is 6 feet long and another that is 12 feet long. Tom wants to use the board that will allow him to push the tire into the truck with less effort force.

Which of the following pictures shows the board that he should use?

Question

Tom needs to load a tire into a moving truck using an inclined plane. He has two boards—one that is 6 feet long and another that is 12 feet long. Tom wants to use the board that will allow him to push the tire into the truck with less effort force.

Which of the following pictures shows the board that he should use?

Vocaloid · Answer

Work = force * distance

Since the amount of work done is the same regardless of which board is used, increasing the length decreases the amount of force needed.