We revisit the ball (mass of 100 g) that was attached at the end of the string. The distance between the finger (central point of rotation) and the ball is 10 cm. The ball starts rotating counterclockwise with initial angular velocity of rad. s-1 and reaches a higher speed of T rad. s-1 in 2 seconds.

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Chapter8: Rotational Motion
Section: Chapter Questions
Problem 60A
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I need both parts answered please, thank you. 

We revisit the ball (mass of 100 g) that was attached at the end of the string. The distance between
the finger (central point of rotation) and the ball is 10 cm. The ball starts rotating counterclockwise
with initial angular velocity of rad. s1 and reaches a higher speed of T rad. s-1 in 2 seconds.
Transcribed Image Text:We revisit the ball (mass of 100 g) that was attached at the end of the string. The distance between the finger (central point of rotation) and the ball is 10 cm. The ball starts rotating counterclockwise with initial angular velocity of rad. s1 and reaches a higher speed of T rad. s-1 in 2 seconds.
What is the magnitude of the torque that was applied on the ball to increase its velocity?
O 7.578 x 10-6 N . m
3.927 x 10-4 N. m
3.927 x 10-6 N. m
O 7.854 x 10–4 N. m
What is the magnitude of the tangential force associated with the torque that was found?
O 7.854 x 10-3 N
O 7.578 x 104 N
7.854 x 10-6 N
O 7.578 x 10-6 N
Transcribed Image Text:What is the magnitude of the torque that was applied on the ball to increase its velocity? O 7.578 x 10-6 N . m 3.927 x 10-4 N. m 3.927 x 10-6 N. m O 7.854 x 10–4 N. m What is the magnitude of the tangential force associated with the torque that was found? O 7.854 x 10-3 N O 7.578 x 104 N 7.854 x 10-6 N O 7.578 x 10-6 N
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