College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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#3 please. Thanks !

Chapter 7
PHYS 203: Fundamentals of Physics
Concurrent and Parallel Forces
Key Concepts:
• 2-Dimensional Forces: F Fi+ F,ŷ
• Free Body Diagrams
• Torque: T=Fr
• Mechanical Equilibrium:
• Center of gravity
Reinforcement:
1. What are the resultant force (R) of each scenario:
a) Western force of 40 N and a eastern force of 20 N, R =
b) F= 202, F2 = -33ŷ, R =
%3D
%3D
%3D
c) Southern force of 50 N and a Northeast force of 50 N, R =
%D
2. A lug nut on a wheel of an automobile is specified to be torqued at 55.0 N-m. If the tire iron used to tighten
the nut is 20.3 cm long, what is the force needed to apply to achieve the specification?
3. A 2500 kg truck is 5.00 m from one end of a 27.0 m long bridge. A 1500 kg car is 10.0 m from the same end.
How much weight must each end of the bridge support for mechanical equilibrium to hold?
1.
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Transcribed Image Text:Chapter 7 PHYS 203: Fundamentals of Physics Concurrent and Parallel Forces Key Concepts: • 2-Dimensional Forces: F Fi+ F,ŷ • Free Body Diagrams • Torque: T=Fr • Mechanical Equilibrium: • Center of gravity Reinforcement: 1. What are the resultant force (R) of each scenario: a) Western force of 40 N and a eastern force of 20 N, R = b) F= 202, F2 = -33ŷ, R = %3D %3D %3D c) Southern force of 50 N and a Northeast force of 50 N, R = %D 2. A lug nut on a wheel of an automobile is specified to be torqued at 55.0 N-m. If the tire iron used to tighten the nut is 20.3 cm long, what is the force needed to apply to achieve the specification? 3. A 2500 kg truck is 5.00 m from one end of a 27.0 m long bridge. A 1500 kg car is 10.0 m from the same end. How much weight must each end of the bridge support for mechanical equilibrium to hold? 1.
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