A 100 N uniform beam with a length of 3.0 m and supported by a knife edge at the middle is in equilibrium. What is the force exerted by the support on the beam? What is the net force on the beam? What is the total torque on the beam? A 3.0 kg load is placed 0.50 m from the right end of the beam. What torque does it cause? What mass should be placed at the left end so that the balance will be restored?

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
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A 100 N uniform beam with a length of 3.0 m and supported by a knife edge at the middle is in equilibrium.

What is the force exerted by the support on the beam?

What is the net force on the beam? 

What is the total torque on the beam? 

A 3.0 kg load is placed 0.50 m from the right end of the beam. What torque does it cause?

What mass should be placed at the left end so that the balance will be restored?

 
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What mass should be placed at the left end so that the balance will be restored?

1. 1.0 kg
2. 2.0 kg
3. 9.8 kg
4. 19.6 kg
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