A Ball of Radius R and Mass M Is Hung

question 18

Multiple Choice

A ball of radius r and mass m is hung using a light string of length L from a frictionless vertical wall.The normal force on the ball due to the wall is

• A)mgr/L
• D)mgL/r
• E)None of these is correct.

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Definitions:

Elastic Supply

A situation where the quantity supplied of a good changes significantly in response to changes in its price.

Elastic Demand

a situation where the quantity demanded of a good or service significantly changes in response to a change in price.

Price Elasticity

A measure of how much the quantity demanded of a good responds to a change in its price.

Excise Tax

A tax charged on specific goods and services, such as alcohol, tobacco, and gasoline.