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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i need help with this please
Transcribed Image Text:L1. Uff da! You've been tasked with pulling two heavy supply crates of mass mA = 30 kg and mB =
10 kg up the side of a mountain with incline angle q = 25°. What makes things worse is that crate
B has fallen into a crevice as shown. Luckily, crate A is tethered to crate B with a lightweight rope
over an ideal pulley (frictionless, negligible mass). Since you're shorter than crate A, you pull
crate A with a force F at an angle f = 10° downward from a line parallel to the incline as00s 8
shown. The coefficient of kinetic friction between the block and the surface is mk = 0.10. Assume
you are successful at accelerating crate A up the incline.
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Em\gx007 3
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:ad fliw mstays grolat to yoneupert slugns 9d stellinzo of eniged
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2\bs1 EE 8
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(a) Draw a Free Body Diagram of Crate A.
b
(b) Draw a Free Body Diagram of Crate B.
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In addition to labeled forces, each of your free-body diagrams should include the direction of
acceleration and a coordinate system.
(c) If Crate A accelerates up the incline at 1.0 m/s², determine the magnitude of the force F.
WON
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