The photovoltaic (PV) panel installer on the roof of a building is holding on to a rope that goes over a pulley, and connects to a hanging PV panel. Assume a massless rope that goes over a massless pulley with a frictionles bearing. The PV panel installer slides down the roof, which is at an angle of 15.0° from the horizontal. The mass of the installer is 75.0kg, and the mass of the PV panel is 15.0kg. a) Draw the two free body diagrams (FBDs) and show your choice of coordinates for each. b) For each FBD, write Newton's 2nd Law decomposed into components, based on your choice of coordinates. (Remember the hint: keep track of which variables are known, and which are unknown.) c) Solve for the acceleration of the installer (note that it's the same magnitude as the acceleration of the PV panel). d) Solve for the tension in the rope. e) Solve for the normal force on the installer due to contact with the roof.

The photovoltaic (PV) panel installer on the roof of a building is holding on to a rope that goes over a pulley, and connects to a hanging PV panel. Assume a massless rope that goes over a massless pulley with a frictionles bearing. The PV panel installer slides down the roof, which is at an angle of 15.0° from the horizontal. The mass of the installer is 75.0kg, and the mass of the PV panel is 15.0kg. a) Draw the two free body diagrams (FBDs) and show your choice of coordinates for each. b) For each FBD, write Newton's 2nd Law decomposed into components, based on your choice of coordinates. (Remember the hint: keep track of which variables are known, and which are unknown.) c) Solve for the acceleration of the installer (note that it's the same magnitude as the acceleration of the PV panel). d) Solve for the tension in the rope. e) Solve for the normal force on the installer due to contact with the roof.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

The photovoltaic (PV) panel installer on the roof of a building is holding on to a rope that goes over a pulley, and connects to a hanging PV panel. Assume a massless rope that goes over a massless pulley with a frictionless
bearing. The PV panel installer slides down the roof, which is at an angle of 15.0° from the horizontal. The mass of the installer is 75.0kg, and the mass of the PV panel is 15.0kg.
a) Draw the two free body diagrams (FBDs) and show your choice of coordinates for each.
b) For each FBD, write Newton's 2nd Law decomposed into components, based on your choice of coordinates. (Remember the hint: keep track of which variables are known, and which are unknown.)
c) Solve for the acceleration of the installer (note that it's the same magnitude as the acceleration of the PV panel).
d) Solve for the
tension in the rope.
e) Solve for the normal force on the installer due to contact with the roof.

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