Two Pendulum Bobs of Unequal Mass Are Suspended from the Same

question 13

Multiple Choice

Two pendulum bobs of unequal mass are suspended from the same fixed point by strings of equal length.The lighter bob is drawn aside and then released so that it collides with the other bob on reaching the vertical position.The collision is elastic.What quantities are conserved in the collision?

• A)Both kinetic energy and angular momentum of the system
• B)Only kinetic energy
• C)Only angular momentum
• D)Angular speed of lighter bob
• E)None of the above

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Definitions:

Marginal Benefit

The heightened pleasure or utility a person obtains from the additional consumption of a unit of a good or service.

Gadgets Production

The process of creating and manufacturing devices, often electronic, that are designed to perform a particular function or task.

Marginal Cost

The cost incurred by producing one additional unit of a good or service.

Sunk Cost

A cost that has already been incurred and is not recoverable.