A brick with a mass of 30.0kg is sliding along a track from point A to D. There is friction between the brick and the platform from point C to D, the track is frictionless from A to C. Write down the energy of the system of the brick and the eather at each point when using the work energy Theorem a) Find the location where the gravitational potential energy is zero on the diagram b) The brick is initially at rest and is being pulled by a horizontal force F = 70.0N over the distance d = 3m to point B. Calculate the magnitude of the velocity of the brick at point B c) the brick is sliding through the valley from point B to C with no external force except gravity and normal force of the track. Between point C and D, the horizontal platform is h = 3.50m below point B. Find the magnitude of the velocity of the brick at point C
A brick with a mass of 30.0kg is sliding along a track from point A to D. There is friction between the brick and the platform from point C to D, the track is frictionless from A to C. Write down the energy of the system of the brick and the eather at each point when using the work energy Theorem a) Find the location where the gravitational potential energy is zero on the diagram b) The brick is initially at rest and is being pulled by a horizontal force F = 70.0N over the distance d = 3m to point B. Calculate the magnitude of the velocity of the brick at point B c) the brick is sliding through the valley from point B to C with no external force except gravity and normal force of the track. Between point C and D, the horizontal platform is h = 3.50m below point B. Find the magnitude of the velocity of the brick at point C
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter1: Getting Started
Section: Chapter Questions
Problem 3PQ
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A brick with a mass of 30.0kg is sliding along a track from point A to D. There is friction between the brick and the platform from point C to D, the track is frictionless from A to C.
Write down the energy of the system of the brick and the eather at each point when using the work energy Theorem
a) Find the location where the gravitational potential energy is zero on the diagram
b) The brick is initially at rest and is being pulled by a horizontal force F = 70.0N over the distance d = 3m to point B. Calculate the magnitude of the velocity of the brick at point B
c) the brick is sliding through the valley from point B to C with no external force except gravity and normal force of the track. Between point C and D, the horizontal platform is h = 3.50m below point B. Find the magnitude of the velocity of the brick at point C
d) assuming the coefficient of kinetic friction is equal to 0.80 between the brick and the platform, how long should the platform be so that the brick is gonna come to a complete stop at point D.
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