a 150 gram ball at the end of a string is swinging in a horizontal circle...
a 150 gram ball at the end of a string is swinging in a horizontal circle of radius 1.15. the ball takes 5 seconds to complete 20 revolutions. a. what is the time for 1 revolution of ball? b. what is the tangential speed of the ball? c. what is the tension in the string?
Homework Answers
Here,
a) time period = time taken/number of revs
time period = 5/20
time period = 0.25 s
the time period is 0.25 s
b) tangential speed of the ball = 2pi * r/time period
tangential speed of the ball = 2pi * 1.15/(0.25)
tangential speed of the ball = 28.9 m/s
tangential speed of the ball is 28.9 m/s
c)
tension in the string = m * v^2/L
tension in the string = 0.150 * 28.9^2/1.15
tension in the string = 108.9 N
the tension in the string is 108.9 N
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