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

question 71

Multiple Choice

A mass m is released from a height h 60 cm from the right-hand side of the track shown in the diagram. 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 = 0.50. 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, right
• B) 3.9 m/s, right
• C) 3.9 m/s, left
• D) 2.9 m/s, left
• E) 2.9 m/s, right

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