Question

You are out and about in the country and your father sees a rock that he really wants in the yard. Now you must get the very heavy rock into the back of a truck. The truck bed is 3 feet off the ground. Your father pulls out a 5-foot plank and begins to set up a ramp. At the same time, you have found a plank that is 8 feet long, and you show it to your father.

1. Which plank will give you the most mechanical advantage?

Show your step by step work.

Answer 1

The 8ft ramp

Step-by-step explanation:

L/h

5/3

1.66

1.66:1

L/h

8/3

2.66

2.66:1

8ft is the ramp that would give you the most amount of mechanical advantage.