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An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a mass of m2= 1.4 kg is tied to it (see the figure below). The suspended mass remains in equilibrium while the puck on the tabletop revolves.
(a) What is the tension in the string?
N
(b) What is the horizontal force acting on the puck?
(c) What is the speed of the puck?
m/s
A spiral staircase winds up to the top of a tower in an old castle. To measure the height of the tower, a rope is attached to the top of the tower, What is the height of the tower
What is the change in kinetic energy of the puck
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