001 (part 1 of 2) A racing car travels on a circular track of radius 250 m, moving with a constant linear speed of 49.6 m/s. Find its angular speed. Answer in units of rad/s. 002 (part 2 of 2) Find the magnitude of its acceleration. Answer in units of m/s².
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- You have a 1.00 m long string with a bob attached to its end. You are swinging it around your head, and it completes 1.00 whole revolution every 2.00 s. What is its tangential speed, in m/s? Answer with 3 significant figures.An ultracentrifuge accelerates uniformly from rest to 100,000 rpm in 2.0 min. If this ultracentrifuge accelerates 4.0 seconds starting from rest, what is the magnitude of the centripetal acceleration in unit of gravitational acceleration g for your sample sitting at 4.0 cm from the center axis? Use g = 9.8 m/s2. Hint: compute the centripetal acceleration in unit of m/s2 first, then divided by g will be your answer. For example, if your centripetal acceleration is 19.6 m/s2, your answer measured in unit of g is 2.0.An object travels in a circular path. It takes 2.4 seconds to complete each rotation. If the radius of the circle is 6.3 m, what is the object's average linear speed?
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