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:

Gratuitous Bailment

A bailment where the bailee (the person receiving the property) does not pay the bailor (the property owner) and holds the property for the benefit of the bailor or a third party.

Intangible Property

Property that is incapable of being apprehended by the senses (such as by sight or touch). Intellectual property is an example of intangible property.

Patent

A government grant giving an inventor exclusive rights to make, use, or sell an invention for a certain number of years.

Bailee

A person or entity entrusted with custody of property belonging to another.