A group of students is designing a wheelchair ramp for their school entrance. According to the concept of a simple machine, which modification would make it easier to push a wheelchair to the same height?

Question

A group of students is designing a wheelchair ramp for their school entrance. According to the concept of a simple machine, which modification would make it easier to push a wheelchair to the same height? — Exam MCQ

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C. Increasing the length of the ramp while keeping its height constant — An inclined plane reduces the required effort by increasing the distance over which the load is raised. A longer ramp for the same height makes the slope gentler.

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A. Adding friction material to the ramp surface to slow down movement

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B. Making the ramp steeper by decreasing its length for the same height

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D. Adding steps instead of a ramp to reach the same height

A group of students is designing a wheelchair ramp for their school entrance. According to the concept of a simple machine, which modification would make it easier to push a wheelchair to the same height?

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