A Mass M Is Released from a Height 60 Cm $\mu$

question 22

Multiple Choice

A mass m is released from a height 60 cm from the right-hand side of the track shown in the diagram at right. There is only friction acting on the mass on the horizontal portion 35 cm either side of the midpoint O, with a kinetic coefficient of friction of $\mu$ _k = 0.5. Determine what is the velocity of the block the first time it passes through the midpoint, and on which side of the midpoint does it stop?

• A) 3.4 m/s, R
• B) 3.9 m/s, R
• C) 3.9 m/s, L
• D) 2.9 m/s, L
• E) 2.9 m/s, R

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