Question

You Are Out In The Woods And You Need To Move A Boulder That Is In The Way, You Happen To Have A Long 2-by-4 Board With You And You Decide To Use It As A Lever. You Find A Rock To Act As A Fulcrum. Which Of The Following Would Be A Good Thing To Try?

A. Move the fulcrum rock closer to the boulder.
B. Move the fulcrum rock farther from the boulder.
C. Try using the board without a fulcrum.
D. Try shortening your board.

Answer 1

Answer: A) Move the fulcrum rock closer to the boulder

Step-by-step explanation:

The longer the effort arm is and the shorter the load arm is, the less energy it takes to move the end of the load arm.

X <-load effort-> X Effort Energy: 10

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O <- fulcrum

X <-load effort-> X Effort Energy: 100

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O <- fulcrum