A mover uses a ramp to load a crate of nails onto a truck. The crate, which must be lifted 1.5 m from the street to the bed of the truck, is pushed along the length of the ramp. If the ramp is 4.5 m long and friction between the ramp and crate can be ignored, what is the mechanical advantage of the ramp?

Question

Maritza Mosley

Physics

7 February, 19:45

A mover uses a ramp to load a crate of nails onto a truck. The crate, which must be lifted 1.5 m from the street to the bed of the truck, is pushed along the length of the ramp. If the ramp is 4.5 m long and friction between the ramp and crate can be ignored, what is the mechanical advantage of the ramp?

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Answers (1)

Know the Answer?

Kenley Whitaker · Answer 1

Answer: M. A = 3

Explanation:

A ramp is an example of an inclined plain. Where the

Height H = 1.5 m

Length L = 4.5 m

Mechanical advantage of a machine is the ratio of the load to effort. While mechanical advantage M. A of an inclined plain is the ratio of the length of the plain to the height of the plain.

M. A = L/H

Substitute the values of L and H into the formula

M. A = 4.5/1.5 = 3

The mechanical advantage of the ramp is 3