SOLUTION: A 133-lb student races upstairs with a vertical height of 5.3 m in 6.5 s to get to a class on the second floor. How much power in watts does the student expend in doing work agains

Question 1205985: A 133-lb student races upstairs with a vertical height of 5.3 m in 6.5 s to get to a class on the second floor. How much power in watts does the student expend in doing work against gravity? The Answer has to be in Watts.
Answer by ikleyn(53937) (Show Source): You can put this solution on YOUR website!
.
A 133-lb student races upstairs with a vertical height of 5.3 m in 6.5 s
to get to a class on the second floor. How much power in watts does the student expend
in doing work against gravity? The Answer has to be in Watts.
~~~~~~~~~~~~~~~~~

(1)  Convert the mass of 133 lbs to kilograms

        133 lbs  is  0.453592*133 = 60.328 kilograms.


(2)  Calculate the work done

        work = m*g*h = 60.328 kg * 9.81 kg/s^2 * 5.3 m = 3136.634 joules


(3)  Divide the work by the time to determine the power

        power =  = 482.56 watts.    ANSWER

Solved.

RELATED QUESTIONS
The scores of 5 students in an examination are: 6, 5, 8, 7 and 4. Find the... (answered by ewatrrr)

Hi Can someone please help with question If a room has a width of 5 m, a length of 6... (answered by addingup,jim_thompson5910)

1. A cabinet is pulled across a cemented floor with a rope that makes an angle of... (answered by ikleyn,Alan3354)

A student gets on the elevator on the first floor. The elevator stops at the second floor (answered by Fombitz)

Can someone please explain the problem If a room has a width of 5 m, a length of 6 m,... (answered by greenestamps)

I am not sure how to set this word problem up in order to solve. The weight W of an... (answered by psbhowmick)

A merchant wishes to mix candy worth $5 per lb with 40 lb of candy worth $2 per lb to get (answered by ptaylor)

the owner of a local chocolate shop wants to develop a new trail mix. how many pounds of... (answered by checkley77)

A basketball player takes a shot a a regulation basket, 10 feet off the floor. He... (answered by stanbon)