A 50-Kg Block Rests on a Horizontal Surface $\mu$ _a = 0

question 23

Multiple Choice

A 50-kg block rests on a horizontal surface.The coefficient of static friction $\mu$ _a = 0.50.The coefficient of kinetic friction $\mu$ _k = 0.35.A force of 250 N is applied as shown.

• A)The block remains at rest.
• B)The block moves and continues to move at constant velocity.
• C)The block accelerates to the right.
• D)The block does not move until is increased to greater than 490 N.
• E)No conclusions can be drawn concerning the movement of the block from the information given.

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