Three masses are attached to a uniform meter stick, as shown in Figure 12.9. The mass of the meter stick is 150.0 g and the masses to the left of the fulcrum are m₁ = 50.0 g and m₂ = 75.0 g. Find the mass m3 that balances the system when it is attached at the right end of the stick, and the normal reaction force at the fulcrum when the system is balanced.

Three masses are attached to a uniform meter stick, as shown in Figure 12.9. The mass of the meter stick is 150.0 g and the masses to the left of the fulcrum are m₁ = 50.0 g and m₂ = 75.0 g. Find the mass m3 that balances the system when it is attached at the right end of the stick, and the normal reaction force at the fulcrum when the system is balanced.

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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Question

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Three masses are attached to a uniform meter stick, as shown in Figure 12.9. The mass of the meter stick is
150.0 g and the masses to the left of the fulcrum are m₁ = 50.0 g and m₂ = 75.0 g. Find the mass m3 that
balances the system when it is attached at the right end of the stick, and the normal reaction force at the fulcrum
when the system is balanced.
+
m₁
- 30 cm
m₂
40 cm
S
30 cm
m3
Figure 12.9 In a torque balance, a horizontal beam is supported at a
fulcrum (indicated by S) and masses are attached to both sides of the
fulcrum. The system is in static equilibrium when the beam does not
rotate. It is balanced when the beam remains level.

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