When We Apply the Energy Conversation Principle to a Cylinder

question 39

Multiple Choice

When we apply the energy conversation principle to a cylinder rolling down an incline without sliding, we exclude the work done by friction because:

• A)there is no friction present
• B)the angular velocity of the center of mass about the point of contact is zero
• C)the coefficient of kinetic friction is zero
• D)the linear velocity of the point of contact (relative to the inclined surface)is zero
• E)the coefficient of static and kinetic friction are equal

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Definitions:

Cocaine

A powerful stimulant drug derived from the coca plant that can cause euphoria and addiction.

Withdrawal

Symptoms that occur after abrupt discontinuation or decrease in intake of substances that have been used regularly.

Paranoia

A thought process heavily influenced by anxiety or fear, often to the point of irrationality and delusion, typically involving persecutory beliefs.

Psychoactive Drugs

Substances that, when taken, alter brain function, resulting in temporary changes in perception, mood, consciousness, and behavior.