A Ball of Mass M Moves in a Circular Path

question 15

Multiple Choice

A ball of mass M moves in a circular path on a horizontal, frictionless surface.It is attached to a light string that passes through a hole in the center of the table.If the string is pulled down, thereby reducing the radius of the path of the ball, the speed of the ball is observed to increase.Complete the following sentence: This occurs because

• A)the linear momentum of the ball is conserved.
• B)it is required by Newton's first law of motion.
• C)the angular momentum of the ball is conserved.
• D)the angular momentum of the ball must increase.
• E)the total mechanical energy of the ball must remain constant.

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Definitions:

Ownership

The state or fact of owning something, which can involve possessing property, shares in a company, or any asset that grants the owner legal rights and responsibilities.

Horizontal Mergers

A business consolidation that occurs between firms that operate in the same industry or production stage.

Economies of Scale

Cost advantages reaped by companies when production becomes efficient, resulting in the average cost per unit of output decreasing with increasing scale.

Conglomerate Merger

A type of merger where two companies operating in unrelated business areas combine their operations.