A Rectangular Block Is Moving Along a Frictionless Path When

question 11

Multiple Choice

A rectangular block is moving along a frictionless path when it encounters the circular loop as shown. The block passes points 1,2,3,4,1 before returning to the horizontal track. At point 3:

• A) its mechanical energy is a minimum
• B) the forces on it are balanced
• C) it is not accelerating
• D) its speed is a minimum
• E) it experiences a net upward force

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Definitions:

Maintain

To keep something in an existing state or condition, preventing it from deteriorating or ensuring its continual effectiveness.

Avoid

To deliberately stay away from or prevent an event or situation from happening.

One-Upmanship

The practice of gaining a competitive advantage or superiority over others, often through clever but sometimes dubious means.

Falsehoods

False statements or lies meant to deceive.