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Question :
31. A point the rim of a 0.25-m-radius fan blade : 2102155

31. A point on the rim of a 0.25-m-radius fan blade has centripetal acceleration of 0.20 m/s^{2}. Find the centripetal acceleration of a point 0.05 m from the center of the same wheel.

A. 0.01 m/s^{2}

B. 0.02 m/s^{2}

C. 0.04 m/s^{2}

D. 0.08 m/s^{2}

32. A point on the rim of a 0.25-m-radius rotating wheel has a centripetal acceleration of 4.0 m/s^{2}. What is the angular speed of the wheel?

A. 1.0 rad/s

B. 2.0 rad/s

C. 3.2 rad/s

D. 4.0 rad/s

33. A point on the rim of a 0.15-m-radius rotating disk has a centripetal acceleration of 5.0 m/s^{2}. What is the angular speed of a point 0.075 m from the center of the disk?

A. 0.89 rad/s

B. 1.6 rad/s

C. 3.2 rad/s

D. 5.8 rad/s

34. When a point on the rim of a 0.30-m-radius wheel experiences a centripetal acceleration of 4.0 m/s^{2}, what tangential acceleration does that point experience?

A. 1.2 m/s^{2}

B. 2.0 m/s^{2}

C. 4.0 m/s^{2}

D. Cannot determine with the information given.

35. A 0.150-m-radius grinding wheel, starting at rest, develops an angular speed of 12.0 rad/s in a time interval of 4.00 s. What is the centripetal acceleration of a point 0.100 m from the center when the wheel is moving at an angular speed of 12.0 rad/s?

A. 0.450 m/s^{2}

B. 7.20 m/s^{2}

C. 14.4 m/s^{2}

D. 28.8 m/s^{2}