Two electric motors are started from rest. One (A) has a constant angular acceleration of 73.3 rad/s2, and the other (B) has a constant angular acceleration of 98.7 rad/s2. Motor B is started 0.550 s after A.
a) How long after B starts will it have the same angular velocity as A?
b) What is this angular velocity?
c) How many revolutions will each motor have undergone at this time?
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Two electric motors are started from rest. One (A) has a constant angular acceleration of 73.3...
A discus thrower starts from rest and begins to rotate with a constant angular acceleration of 2.5 rad/s2 . Part A:How many revolutions does it take for the discus thrower's angular speed to reach 6.3 rad/s ? Part B: How much time does this take?
Problem 1: A wheel starts from rest and rotates with constant angular acceleration and reaches an angular velocity of 32.0 rad/s in 4.00 s. (a) What is the magnitude of the angular acceleration of the wheel? (b) Through what angle does the wheel rotate in these 4.00 s? Problem 2: An automobile traveling at 90.0 km/hour, has tires of 75.0 cm diameter. (a) What is the angular velocity of the tires about the axis of rotation? (b) If the car...
16. A wheel, released from rest, is rotating with constant angular acceleration of 2.6 rad/s2. At 6.0 s after its release: (a) What is its angular speed? (b) Through what angle has the wheel turned? (c) How many revolutions has it completed? (d) What is the linear speed and what is the magnitude of the linear acceleration of point 0.30 m from the axis of rotation? Ans: 16rads, 47 rad, 7.4rev, 4. m/s, 73 m/s2)
1. A centrifuge starts from rest and reaches an angular velocity of 30000 rpm in 5s. What is the angular acceleration(in rad/s2) of this device? 2. A flywheel rotating at 20 rpm undergoes an angular acceleration of 2.0 rad/s2 for precisely 5 revolutions. What is the angular velocity of the flywheel at the end of this acceleration?
A wheel starts at rest, and has an angular acceleration of 4 rad/s2. After 10.0 s it will have an angular velocity of
9.66 A computer disk drive is turned on starting from rest and has constant angular acceleration. If it took 0.0865 s for the drive to make its second complete revolution, (a) how long did it take to make the first complete revolution, and (b) what is its angular acceleration, in rad/s2? 9.66 A computer disk drive is turned on starting from rest and has constant angular acceleration. If it took 0.0865 s for the drive to make its second complete...
A wheel, starting from rest, rotates with a constant angular acceleration of 4.50 rad/s2. During a certain 5.00 s interval, it turns through 85.0 rad. (a) What is the angular velocity of the wheel at the start of the 5.00 s interval? rad/s (b) How long has the wheel been turning before the start of the 5.00 s interval? s
A disk is initialy at rest and a constant angular acceleration of 5 rad/s? is applied to it counter-clockwise (about its center). After 5.8 seconds, the constant angular acceleration value switches to 10 rad/s? clockwise. How many revolutions, in total, are made before the disk is stopped again?
A dentist's drill starts from rest. After 3.10 s of constant angular acceleration it turns at a rate of 2.80 ✕ 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. ________ rad
A dentist's drill starts from rest. After 3.20 s of constant angular acceleration it turns at a rate of 2.70 ✕ 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. rad