An Object of Mass M = 200 G Slides Down $\mu$

question 68

Multiple Choice

An object of mass m = 200 g slides down a frictionless ramp from a height H = 60 cm. Near the bottom of the ramp, the path changes into an arc of a circle with radius r = 20 cm. The arc has coefficient of kinetic friction $\mu$ _k = 0.4. The angle $\theta$ = 120 $\degree$ and points P₁ and P₂ which are the ends of the arc, are at the same height. What is the speed of the object at point P₁?

• A) 1.1 m/s
• B) 2.5 m/s
• C) 3.1 m/s
• D) 3.4 m/s
• E) 4.1 m/s

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