OL UCM Quiz 1

Kareems' favorite disco record has a scratch 8 cm from the center that makes the record skip 50 times every 1.5 minutes. What is the speed of the scratch as it turns?

• 0.279 m/s
• 27.925 m/s
• 0.905 m/s
• 90.478 m/s

Porter's favorite ride at the Fall Festival is the Gravitron, which has a radius of 6 m. The ride has a frequency of 35 rpms. What is Porters speed on the gravitron?

• 21.99 m/s
• 64.63 m/s
• 1.8 m/s
• 2199.11 m/s

Porter's favorite ride at the Fall Festival is the Gravitron, which has a radius of 6 m. The ride has a frequency of 35 rpms. What is porters centripetal acceleration on the Gravitron?

• 80.59 m/s/s
• 696.17 m/s/s
• 0.54 m/s/s
• 3.67 m/s/s

Captain Kev, the pilot of a 78650 kg plane, is told that he must remain in a holding pattern over the airport until it is his turn to land. Captain Kev flies his plane in a circle with a radius of 40 km, once every 20 minutes. What is the magnitude of planes tangential velocity?

• 209.44 m/s
• 301592894.74 m/s
• 0.21 m/s
• 12566.37 m/s

Captain Kev, the pilot of a 78650 kg plane, is told that he must remain in a holding pattern over the airport until it is his turn to land. Captain Kev flies his plane in a circle with a radius of 40 km, once every 20 minutes. What magnitude of centripetal force must the air exert against the wins to keep the plane moving in a circle?

• 86250 N
• 178846706562485000 N
• 412 N
• 310497724 N

What is the radius of an automobile tire that turns once every 0.084 seconds and has a speed of 30 m/s?

• 0.4 m
• 2243.99 m
• 0.02 m
• 2.49 m

A toy flying pig, suspended from the ceiling, is moving in uniform circular motion. The radius is 76 cm. It takes 2.1 seconds for the 120 gram pig to complete 1 revolution. What is the speed of the pig?

• 2.27 m/s
• 10.03 m/s
• 3.94 m/s
• 17.36 m/s

A toy flying pig, suspended from the ceiling, is moving in uniform circular motion. The radius is 76 cm. It takes 2.1 seconds for the 120 gram pig to complete 1 revolution. What is the centripetal acceleration of the pig?

• 6.78 m/s/s
• 132.37 m/s/s
• 20.43 m/s/s
• 396.54 m/s/s

A toy flying pig, suspended from the ceiling, is moving in uniform circular motion. The radius is 76 cm. It takes 2.1 seconds for the 120 gram pig to complete 1 revolution. What is the centripetal force acting on the pig?

• 0.81 N
• 15.88 N
• 2.45 N
• 47.58 N

A 1.2 kg tennis ball is tied to a rope and is swung in a vertical circle. The circle has a radius of 0.8 meters. If it spins 14 times every 8 seconds, what is the centripetal acceleration of the ball?

• 96.8 m/s/s
• 11 m/s/s
• 61.95 m/s/s
• 7.04 m/s/s