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

question 10

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