# Answer to Question #7955 in Mechanics | Relativity for Gabe

Question #7955
Q1: A building superintendent twirls a set of keys in a circle at the end of a cord. If the keys have a centripetal acceleration of 121 m/s2 and the cord has a length of 0.25 m, what is the tangential speed of the keys? Q2: A sock stuck to the side of a clothes-dryer barrel has a centripetal acceleration of 27 m/s2. If the dryer barrel has a radius of 26.0 cm, what is the tangential speed of the sock? Q3: A grinding wheel 0.56 m in diameter rotates at 2500 rpm. (a) Calculate its angular velocity in rad/s. (b) What are the linear speed and acceleration of a point on the edge of the grinding wheel? Q4: A rotating merry go-round makes one complete revolution in 4.3 s (Figure 8-38). (a) What is the linear speed of a child seated 0.8 m from the center? (b) What is her acceleration (give components)? tangential acceleration: radial acceleration: Q5: (a) Find the centripetal accelerations of a point on the Equator, due to the rotation of Earth about its axis. (b) Find the centripetal accelerations of at Nor
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2012-03-30T06:36:16-0400
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