A Store's Sign Has a Mass of 20 Kg and Is

question 27

Multiple Choice

A store's sign has a mass of 20 kg and is 3.0 m long.It is uniform,so its center of gravity is at the center of the sign.It is supported horizontally by a small loose bolt attached to the wall at one end and by a wire at the other end,as shown in the figure.What is the magnitude of the net force that the bolt exerts on the sign?

• A)460 N
• B)230 N
• C)200 N
• D)120 N
• E)300 N

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Definitions:

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