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100 POINTS PLEASE HELP ASAP!!!!
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 (who know about mechanical advantage!) have found a plank that is 8 feet long, and you show it to your father. Which plank will give you the most mechanical advantage? Calculate the MA for each plank.

Respuesta :

bmcgee2004

Answer:

plank two (8ft)

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 tje most amount of mechanical avantage.

The mechanical advantage for the planks will be 1.66:1 and 2.66:1 respectively.

Mechanical advantage refers to the measure of the force amplification that is achieved by a tool. Based on the information given, the mechanical advantage for the first plank will be:

= Length / Height

= 5/3

= 1.66

= 1.66:1

The mechanical advantage for the second plank will be:

= Length / Height

= 8/3

= 2.66

= 2.66:1

In conclusion, the second plank will give the most mechanical advantage.

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