Part A A disk of radius 24.0 cm is free to tum about an axle perpendicular to it through Its center. It has very thin but strong string wrapped around its rim, and the string is attached to a ball that is pulled tangentially away from the rim of the disk (the figure (Eigure 1)). The pul increases in magnitude and produces an acceleration of the ball that obeys the equation a (t) At. where t is in seconds and A is a constant. The cylinder starts from rest, and at the end of the third second, the ball's acceleration is 1.70 m/s. Find A. * O D) ? m/s Submit Request Anawer Part B Express the angular acceleration of the disk as a function of time. VAE a(t) = (rad/s)t Submit Request Anawer Part C How much time after the disk has begun to turn does it reach an angular speed of 125 rad/s ? * O D) ? Submit Request Answer Figure < 1 of 1 Part D Ball Through what angle has the disk turned just as it reaches 12.5 rad/s ? (Hint: See Section 2.6 in the textbook) Pull AEd Disk rad Submit Bequest Answer

Part A A disk of radius 24.0 cm is free to tum about an axle perpendicular to it through Its center. It has very thin but strong string wrapped around its rim, and the string is attached to a ball that is pulled tangentially away from the rim of the disk (the figure (Eigure 1)). The pul increases in magnitude and produces an acceleration of the ball that obeys the equation a (t) At. where t is in seconds and A is a constant. The cylinder starts from rest, and at the end of the third second, the ball's acceleration is 1.70 m/s. Find A. * O D) ? m/s Submit Request Anawer Part B Express the angular acceleration of the disk as a function of time. VAE a(t) = (rad/s)t Submit Request Anawer Part C How much time after the disk has begun to turn does it reach an angular speed of 125 rad/s ? * O D) ? Submit Request Answer Figure < 1 of 1 Part D Ball Through what angle has the disk turned just as it reaches 12.5 rad/s ? (Hint: See Section 2.6 in the textbook) Pull AEd Disk rad Submit Bequest Answer

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter9: Optics

Section: Chapter Questions

Problem 5Q

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