Consider a hill with a slope of 30 degrees relative to the horizontal direction. I push a ball of mass 2 kg directly up the slope, and as I do so, I take ten steps, walking up the slope, with each step being 50 cm long. Presuming that the downward (i.e., vertical) force, in newtons, exerted by gravity on the ball is 9.8 times the mass of the ball in kg, by how many joules has the potential energy of the ball increased?
1
Expert's answer
2018-10-08T15:02:09-0400
The increase in the potential energy of the ball: E=mgh=mgl sin30=mgnd sin30 E=(2)(9.8)(10)(0.5) sin30=49 J
Learn more about our help with Assignments: Physics
Comments
Assignment Expert
10.10.18, 18:02
Dear Surya, please use panel for submitting new questions
Surya
10.10.18, 09:31
Presuming the ball is free to move, what force, pushing uphill along
the direction of the slope, do I have to exert on the ball just to
hold it stationary on the hill?
Leave a comment
Thank you! Your comments have been successfully added. However, they need to be checked by the moderator before being published.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
APPROVED BY CLIENTS
Finding a professional expert in "partial differential equations" in the advanced level is difficult.
You can find this expert in "Assignmentexpert.com" with confidence.
Exceptional experts! I appreciate your help. God bless you!
Comments
Dear Surya, please use panel for submitting new questions
Presuming the ball is free to move, what force, pushing uphill along the direction of the slope, do I have to exert on the ball just to hold it stationary on the hill?
Leave a comment