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6. When you climb a flight of stairs, you are moving your body weight (a

force) up a certain distance (the vertical height from the bottom to the

top stair). In which case does the amount of work you do increase?

Explain your answer.

a. You run up 10 stairs then you run up 50 stairs.

b. You walk slowly up 10 stairs and then you run up 10 stairs really fast.

Question

Shannon Cole

Physics

6 January, 23:33

Pie

Sit

6. When you climb a flight of stairs, you are moving your body weight (a

force) up a certain distance (the vertical height from the bottom to the

top stair). In which case does the amount of work you do increase?

Explain your answer.

a. You run up 10 stairs then you run up 50 stairs.

b. You walk slowly up 10 stairs and then you run up 10 stairs really fast.

+5

Answers (1)

Know the Answer?

Sara Woods · Answer 1

In part (a)

Explanation:

Work done when climbed upstairs is explained in terms of change in potential energy.

Work=Δ (Mass. gravity. height) or W=m. g. h

Mass and gravity are constant during motion but height differs in part a from part b. The speed of climbing doesn't affect the value of work.

Height (in terms of the number of stairs) in part a is 40 stairs more than in part b.