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  36. The distance from the center of a Ferris wheel

Question :   36. The distance from the center of a Ferris wheel : 2102156

 

36. The distance from the center of a Ferris wheel to a passenger seat is 12 m. What centripetal acceleration does a passenger experience when the wheel's angular speed is 0.50 rad/s?

A. 16.9 m/s2

B. 9.0 m/s2

C. 3.0 m/s2

D. 6.0 m/s2

37. What centripetal force does an 80-kg passenger experience when seated 12 m from the center of a Ferris wheel whose angular speed is 0.50 rad/s?

A. 484 N

B. 720 N

C. 914 N

D. 240 N

38. A 0.400-kg object is swung in a circular path and in a vertical plane on a 0.500-m-length string. If the angular speed at the bottom is 8.00 rad/s, what is the tension in the string when the object is at the bottom of the circle?

A. 5.60 N

B. 10.5 N

C. 16.7 N

D. 19.6 N

39. A 0.30-kg rock is swung in a circular path and in a vertical plane on a 0.25-m-length string. At the top of the path, the angular speed is 12.0 rad/s. What is the tension in the string at that point?

A. 7.9 N

B. 16 N

C. 18 N

D. 83 N

40. A 1 500-kg car rounds an unbanked curve with a radius of 52 m at a speed of 12 m/s. What minimum coefficient of friction must exist between the road and tires to prevent the car from slipping? (g = 9.8 m/s2)

A. 0.18

B. 0.30

C. 0.28

D. 0.37

 

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