4. A sprinter nuns at constant speed 9 m's around a circular track with a centripetal...

Question

Question

Answer 1

Answer #1

a] centripetal acceleration a = v^2/r

r = v^2/a = 9.2^2/7.6 = 11.14 m answer

b] angular velocity = v/r = 9.2/11.14 = 0.826 rad/s

c] angular acceleration = 0

d] Period = 2pi*r/v = 2pi*11.14/9.2 = 7.61 s

e] revolution per minute = 60 /7.61 =7.88 rev/min

Answer 2

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