Use the following figure for the next problem:
-A classic demonstration illustrating eddy currents is performed by dropping a permanent magnet inside a conducting cylinder.The magnet does not go into free fall.Instead it reaches terminal velocity and can take a few seconds to drop a length of about a meter.Suppose the mass of the magnet is 70 g and it has a terminal velocity of 10 cm/s.The length of the pipe is 80 cm.What is the magnitude of the magnetic force on the magnet when it is falling at the terminal velocity?
A)0.35 N
B)0.79 N
C)0.97 N
D)0.69 N
E)None of these is correct.

Question

Use the following figure for the next problem: 
-A classic demonstration illustrating eddy currents is performed by dropping a permanent magnet inside a conducting cylinder.The magnet does not go into free fall.Instead it reaches terminal velocity and can take a few seconds to drop a length of about a meter.Suppose the mass of the magnet is 70 g and it has a terminal velocity of 10 cm/s.The length of the pipe is 80 cm.What is the magnitude of the magnetic force on the magnet when it is falling at the terminal velocity?
A)0.35 N 
B)0.79 N 
C)0.97 N 
D)0.69 N 
E)None of these is correct.

Quizplus · Accepted Answer

The Answer of Use the following figure for the next problem: 
-A classic demonstration illustrating eddy currents is performed by dropping a permanent magnet inside a conducting cylinder.The magnet does not go into free fall.Instead it reaches terminal velocity and can take a few seconds to drop a length of about a meter.Suppose the mass of the magnet is 70 g and it has a terminal velocity of 10 cm/s.The length of the pipe is 80 cm.What is the magnitude of the magnetic force on the magnet when it is falling at the terminal velocity?
A)0.35 N 
B)0.79 N 
C)0.97 N 
D)0.69 N 
E)None of these is correct.

Use the Following Figure for the Next Problem