calculate your Power: 1. Find a set of stairs that you can safely run up. 2. Usi

Question

calculate your Power:

1. Find a set of stairs that you can safely run up.

2. Using a stop watch, record how many seconds it takes you to run up the stairs.

3. Using a meter stick, measure the vertical height of the stairs.

4. Calculate the amount of chemical potential energy that you transformed into GPE to get up the stairs. Your mass in Kilograms is your weight in pounds divided by 2.2

5. use the formula P= E/t to calculate your power in running up the stairs.

Question :

1. Infer: How you could increase your power when you run up the stairs. ( decreasing time & Increasing energy)

Explanation / Answer

1) stairs found

2) time taken to go up the stairs

time taken is 10 s

3)

vertical height of stairs = 7 m

4

weight of person = 75 Kg
amount of energy transformed = 75 * 9.8 * 7

amount of energy transformed = 5145 J

5)

Power = 5145/10 = 514.5 W

question

as for the same stairs , the GPE is same

for increasing the power

we needed to decrease the time

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