Tension holds the weight
T = 1.3 * 9.81 = 12.75 N
The force on the puck is the tension, 12.75 N
12.75 = m v^2/R
v^2 = 1.4 * 12.75 /.24
v = 8.63 m/s
An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.4 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 = 1.3 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?
N
(c) What is the speed of the puck?
m/s
1 answer
1 answer