A puck of mass m = 1.15 kg slides in a circle of radius r = 17.3 cm on a frictio

Question

A puck of mass m = 1.15 kg slides in a circle of radius r = 17.3 cm on a frictionless table while attached to a hanging cylinder of mass M = 2.02 kg by means of a cord that extends through a hole in the table [as shown in the figure). What is the required force of tension on M to keep it from falling? How do the tensions acting on M and m compare? Correct: They are equal. Incorrect The tension on M is less than the tension on m. Incorrect The tension on M is greater than the tension on m. You are correct. What is speed of the puck that keeps the cylinder at rest?

Explanation / Answer

a)
T = M*g
= 2.02*9.8
=19.8 N

b)
you did it alraedt

c)
Since tension on M and m are equal.
Tension on m = 19.8 N
This tension provides centrepeatl force to m
T =m*v^2/r
19.8 N = 1.15 Kg* v^2 / (0.173 m)
v= 1.73 m/s

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