- #1
jCarlson
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Hey everyone. I'm new to this site and was wondering if u can help me with a work and power problem.
Question:
A 60kg student runs at a constant velocity up the incline described in the diagram in 4.5s. Calculate the power output of the student.
The diagram was a picture of a right-angled triangle with hypotenuse length 4 meters. The hypotenuse is the ramp, and the ramp is raised to a height of 2.5m (also the length of the vertical leg). The student is running up the ramp.
My Work:
Since he is running at constant velocity, acceleration = 0m/s/s.
F=ma, so F = 0 N.
W=Fd, so W = 0 J.
P=W/t, so P = 0 W.
The answer from the back of the book was P = 326.67 W.
I know the student is doing work in terms of his muscles having a tensional force, but I don't think that is the way to go with this problem at all.
Anyways, any help will be appreciated thanks.
BTW, there was no information regarding friction.
Question:
A 60kg student runs at a constant velocity up the incline described in the diagram in 4.5s. Calculate the power output of the student.
The diagram was a picture of a right-angled triangle with hypotenuse length 4 meters. The hypotenuse is the ramp, and the ramp is raised to a height of 2.5m (also the length of the vertical leg). The student is running up the ramp.
My Work:
Since he is running at constant velocity, acceleration = 0m/s/s.
F=ma, so F = 0 N.
W=Fd, so W = 0 J.
P=W/t, so P = 0 W.
The answer from the back of the book was P = 326.67 W.
I know the student is doing work in terms of his muscles having a tensional force, but I don't think that is the way to go with this problem at all.
Anyways, any help will be appreciated thanks.
BTW, there was no information regarding friction.