Short Answer (i.e. no work needs to be shown): Susan and Daphne both have a mass

Question

Short Answer (i.e. no work needs to be shown): Susan and Daphne both have a mass of 60 kg and are racing up the stairs to their dorm room. There are 10 steps, each 0.2 m high. Daphne wins by 0.7 s. Answer the questions below using 1-2 complete sentences: (c) Conceptually (that is, use word(s) not numbers), what force is considered when calculating the work of climbing up the stairs? (3 pts) a. Who performed more mechanical work and why? b. Who performed more mechanical power and why? c. Conceptually, what force is considered when calculating the work of climbing up the stairs?

Explanation / Answer

a) Both of them applied the same mechanical work as their initial and final state are same. hence, the potential energy is same.

b) Daphne applied more mechanical power because the time taken by him is lesser.

c) Gravitational potential energy is considered for calculating the work done for climbing up the stairs.

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