When a tape is played on a cassette deck, there is a tension in the tape...
When a tape is played on a cassette deck, there is a tension in the tape that applies a torque to the supply reel. Assuming the tension remains constant during playback, how does this applied torque vary as the supply reel becomes empty?
a) torque increases
b) torque decreases
c) torque remains constant
Homework Answers
b) torque decreases.
Note- torque is equal to tension multiple by radial distance so as reel unbounded radial distance of applied tension decreases which decreases torque.
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