Question

Harold uses an inclined plane to move a washing machine from the sidewalk into his house. The vertical distance from the sidewalk to the house is 0.8 meters. If the plane has a mechanical advantage of 2.3, how long is the plane?

A) 0.35 m
B) 3.1 m
C) 1.5 m
D) 1.84 m

Answer 1

D) 1.84 m

Step-by-step explanation:

You want to know the length of an inclined plane that offers a mechanical advantage of 2.3 when moving a washing machine a height of 0.8 meters.

Mechanical advantage

A simple machine offers a mechanical advantage when it trades distance for force. In general, the amount of work required remains the same.

The force required is reduced by a factor of the mechanical advantage, while the distance over which that force is applied is increased by the same factor.

The length of the plane is 2.3×0.8 m = ...

D) 1.84 m

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