A variable-speed drill, initially turning at 225 rpm, speeds up to 1300 rpm in a time interval of 0.8 s. What is its average rotational acceleration? x rpm/s² 10.62 Additional Materials eBook
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A: As per guidelines, only 3 subparts are solved here. Given, mass, m = 1.10 kg radius = 12.0 cm =…
Q: A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate…
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Q: A dentist's drill starts from rest. After 4.00 s of constant angular acceleration it turns at a rate…
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Q: Angular and Linear Quantities: A scooter has wheels with a diameter of 120 mm. What is the angular…
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A: Apply the law of energy conservation. [ rotational kinetic energy + translational energy +…
Q: A dentist's drill starts from rest. After 3.00 s of constant angular acceleration it turns at a rate…
A: Given drill starts from rest it means its initial angular speed is ωi=0 At t=3.00s It attain…
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A: Given: I1 = 2.0 kg.m2ω1 = +5.0 rad/s(clockwise)I2 = 1.0 kg.m2ω2 =- 8.0 rad/s(counterclockwise)
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A: Given angular velocity ω= 2.40 ×104 rev/min= 2513.2741rad/s Time duration t = 2.60 s We have to…
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- A rotating wheel requires 3.08-s to rotate through 37.0 revolutions. Its angular speed at the end of the 3.08-s interval is 98.3 rad/s. What is the constant angular acceleration of the wheel? rad/s2A dentist's drill starts from rest. After 3.40 s of constant angular acceleration it turns at a rate of 2.30 x 10 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this period. radWhat is the angular speed in revolutions per minute (rpm) of a 16.9 g CD with a rotational period of 141 seconds? A 0.374 rpm B 0.213 rpm C 0.553 rpm D 0.511 rpm E 0.426 rpm
- A rotating wheel requires 3.0 seconds to rotate through 233.0 radians. Its angular speed at the end of the 3.0-second interval is 98.0 rad/s. Find: a. The angular speed at the beginning of the 3.0-second interval. b. The constant angular acceleration of the wheel.An electric grinder is switched on at t = 0, accelerates uniformly for 15 s to its operating angular speed of 22 rad/s. The wheel then turns at constant angular speed for 35 s and is switched off, slowing uniformly at 3.5 rad/s² until it stops. From the time it is switched off, how long does the grinder take to stop turning? t = S Record your numerical answer below, assuming three significant figures. Remember to include a "-" as necessary.Jimmothy has a flywheel. It rotates about its central axis. It starts from rest and accelerates uniformly. After completing 100 revolutions, the flywheel reaches an angular speed of 70.9 rad/s. It's your job to calculate the following: 1. What is The angular acceleration of the flywheel 2. What is The time required to complete the first 50 revolutions. 3. What is The time required to complete the second 50 revolutions.
- A dentist's drill starts from rest. After 3.50 s of constant angular acceleration it turns at a rate of 2.30 x 104 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this period. radA tire is being tested and the machine has it rotating with an angular speed of 0.691 rad/ (CW). An angular acceleration is applied to the tire and after a period of 4.30 s, an angle of 12.7 rad (CW) has been turned through. What is the angular acceleration applied? Select one: a. b. O C. O d. 1.69 rad/2 (CCW) 1.05 rad/52 (CW) 1.69 rad/2 (CW) 1.05 rad/2 (CCW)A top has a moment of inertia of 10.7 kg-m2. The top is spinning at 41 rpm. How much rotational kinetic energy (in joules) does the top have?
- A 1.0 kg ball and a 2.0 kg ball are connected by a 1.1-m-long rigid, massless rod. The rod is rotating cw about its center of mass at 20 rpm. What torque will bring the balls to a halt in 5.6 s? Express your answer in newton-meters to two significant figures. ΠΑΣΦ T = ? N.mProblem 1: A small rubber wheel is used to drive a large pottery wheel. The two wheels are mounted so that their circular edges touch. The small wheel has a radius of 6.5 cm and accelerates at the rate of 7.5 rad/s2 , and it is in contact with the pottery wheel (radius 24.0 cm ) without slipping. Part A Calculate the angular acceleration of the pottery wheel. Part B Calculate the time it takes the pottery wheel to reach its required speed of 70 rpm .