Moving walkways are often found in airports. One moving walkway carries passengers up an incline of 30°, A single passenger of mass 72 kg stands on the walkway. The speed of the walkway is 0.51ms−1. Show that the rate at which the walkway does work on the passenger is about 200W.
The weight of the passenger is
where is they mass, and is the gravitational acceleration. The component of the weight that acts along the walkway is:
where .
By definition, the power is:
where is the speed of motion. Thus, obtain:
Answer. 180 W.
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