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A Mass M Slides on a Horizontal Surface

Question 46

Multiple Choice

A mass M slides on a horizontal surface.A mass m is attached to a string routed over a pulley as shown below.Friction is present.When m is released,M accelerates to the right.The coefficient of friction between M and the surface is µk.Which one of the following statements is true? A mass M slides on a horizontal surface.A mass m is attached to a string routed over a pulley as shown below.Friction is present.When m is released,M accelerates to the right.The coefficient of friction between M and the surface is µ<sub>k</sub>.Which one of the following statements is true? A) Doubling the mass of m will double the acceleration. B) Doubling the mass of M will halve the acceleration. C) µ<sub>k</sub> will increase as mass M accelerates. D) Doubling the mass of M will double the force of friction. E) Doubling the mass of M will double µ<sub>k</sub>.


A) Doubling the mass of m will double the acceleration.
B) Doubling the mass of M will halve the acceleration.
C) µk will increase as mass M accelerates.
D) Doubling the mass of M will double the force of friction.
E) Doubling the mass of M will double µk.

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