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Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 2.37 x 103 rad/s, while the other has an angular speed of 5.48 x 103 rad/s. How long will it be before they meet? Number Number Number 13.3 Start i Number 0 0 A dentist causes the bit a highspeed drill to accelerate from an angular speed of 1.46 x 104 rad/s to an angular speed of 4.31 x 104 rad/s. In the process, the bit turns through 2.80 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 8.79 x 104 rad/s, starting from rest? Units Units An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 87.3 rad/s in 1.66 s. The magnitude of the angular deceleration is 47.9 rad/s. Determine the initial angular speed of the fan. m Units End Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 13.9 rad/s. The wheel has a radius of 0.480 m. If you ride the bike for 49.1 min, how far would you have gone if the bike could move? Units Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 2.37 x 103 rad/s, while the other has an angular speed of 5.48 x 103 rad/s. How long will it be before they meet? Number Number Number 13.3 Start i Number 0 0 A dentist causes the bit a highspeed drill to accelerate from an angular speed of 1.46 x 104 rad/s to an angular speed of 4.31 x 104 rad/s. In the process, the bit turns through 2.80 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 8.79 x 104 rad/s, starting from rest? Units Units An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 87.3 rad/s in 1.66 s. The magnitude of the angular deceleration is 47.9 rad/s. Determine the initial angular speed of the fan. m Units End Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 13.9 rad/s. The wheel has a radius of 0.480 m. If you ride the bike for 49.1 min, how far would you have gone if the bike could move? Units
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