a) Look at the diagram in the Basic Concepts part of the lab, under Equilibrium.

Question

a) Look at the diagram in the Basic Concepts part of the lab, under Equilibrium. Two forces act on opposite ends of a uniform rod of mass m and length L, in opposite directions. The rod is supported by a fulcrum at the center, which is the axis of rotation. The force and torque exerted by the fulcrum on the rod are

b) In procedure 2, you balance the ruler. If the density of the ruler increases without changing its dimensions (and remaining uniform), the ruler will

*tip toward m1

**tip toward m2

* be unbalanced, but the direction depends on the hanging masses, the mass of the ruler, and distance

*still be balanced

c) In procedure 3, you balance the ruler. If the density of the ruler increases without changing its dimensions, the ruler will

*tip away from m

*still be balanced

*tip toward m

*be unbalanced, but the direction depends on the hanging mass, the mass of the ruler, and distances

Explanation / Answer

So for the first one we realize that since force is equal to mass times gravity F= mg. On the other hand torque here is 0, they tell you that in the description in the lab.

OR

A)

Total force is zero and total momentrum is zero .Hence the answer is (11)

To answer b) and c) one must know what are the procedures adopted.
2)still be balanced

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