Equilibrium of a Rigid Body Prelab Quiz Refer to : http://www.physics.qc.edu/fil

Question

Equilibrium of a Rigid Body Prelab Quiz

Refer to : http://www.physics.qc.edu/files/535

1. The location of the Mass Support is determined by reading the position at the (Go to http://www.physics.qc.edu/files/535 for references)

a. extreme left edge.

b. bottom edge.

c. extreme right edge.

d. top edge.

e. edge approximately at the center of the support.

2. Where do you expect the center of gravity of the ruler to be? (Go to http://www.physics.qc.edu/files/535 for references)

a. Close to but not exactly the geometric center, 50 cm.

b. Around the 90 cm mark

c. Around the 20 cm mark

d. Exactly at the geometric center, 50 cm.

3. For procedure 2, the "total mass" on the left/right side is (Go to http://www.physics.qc.edu/files/535 for references)

a. the sum of: the total mass placed on the holder, the mass of the holder.

b. the total mass placed on the holder.

c. the sum of: the total mass placed on the holder, the mass of the holder, the mass of the mass support, the mass of the ruler.

d. the sum of: the total mass placed on the holder, the mass of the holder, the mass of the mass support.

4. Suppose in procedure 3 the ruler balances at 35.9 cm with a total mass of 155.5 g as the counterweight. If the center of gravity of the ruler is at 50.3 cm, what is the mass of the ruler? Express your answer to three significant figures and in units of grams. (Go to http://www.physics.qc.edu/files/535 for references)

_________.

5. For procedure 4, the "total mass" on the right side is (Go to http://www.physics.qc.edu/files/535 for references)

a. the sum of: the total mass placed on the holder, the mass of the holder.

b. the total mass placed on the holder.

c. the sum of: the total mass placed on the holder, the mass of the holder, the mass of the mass support.

d. the unknown mass which is to be determined

Explanation / Answer

1. The location of the Mass Support is determined by reading the position at the

a. extreme left edge.

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