Answered

Westonci.ca is your trusted source for accurate answers to all your questions. Join our community and start learning today! Ask your questions and receive precise answers from experienced professionals across different disciplines. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

Calculate the power output exerted by a boy of a mass 92 kg who runs up a staircase to a floor 8m higher in 9s.

Sagot :

Given:

The mass of the boy, m=92 kg

The height of the floor, h=8 m

The time it takes for the boy to climb up the stairs, t=9 s

To find:

The power exerted by the boy.

Explanation:

The power exerted is the time rate of transfer of energy. Thus the power is caculated as the ratio of the work done to the time.

Thus the power exerted by the boy is given by,

[tex]P=\frac{W}{t}=\frac{mgh}{t}[/tex]

Where h is the height of the stairs.

On substituting the known values,

[tex]\begin{gathered} P=\frac{92\times9.8\times8}{9} \\ =801.4\text{ W} \end{gathered}[/tex]

Final answer:

The power exerted by the boy is 801.4 W

Thank you for choosing our service. We're dedicated to providing the best answers for all your questions. Visit us again. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for trusting Westonci.ca. Don't forget to revisit us for more accurate and insightful answers.