A motor spins up from rest to an angular velocity of 165 rad/s in 1.2 s. Treat the motor as a cylinder of mass 3 kg and radius 0.3 meters. Find the rotational work done by the motor after it rotates though 10 revolutions.
A motor spins up from rest to an angular velocity of 165 rad/s in 1.2 s....
A motor spins up from rest to an angular velocity of 265 rad/s in 3 s. Treat the motor as a cylinder of mass 3 kg and radius 0.3 meters. Find the rotational work done by the motor after it rotates though 12 revolutions.
A motor spins gear A with an angular velocity of ct rad/s cc,
where c is constant and t is in seconds. gear a meshes with gear b,
both gears are fixed at center. at t=3 what is angular accleration
of gear b.
200nn C:2.6 65mm
Disk D has angular velocity ω': 4 rad/s and angular acceleration α': 1.2 rad/s' and radius r = 0.3 m. The fixed curved surface C has radius R = 0.8 m. If no slipping occurs between disk D and the fixed surface C, determine the angular velocity and angular acceleration, ω and α, of arm AB. 2. ω,α ω.a
4.) A car motor rotates at 84 rad/s in idle mode. When shut off, its angular acceleration is --20 rad/s2 (a) What is the angular velocity after 1.0 s? (b) How long will it take for the motor to completely stop? (C) How many revolutions does the motor make before stopping after it is turned off?
A Ferris wheel rotates at an angular velocity of 0.26 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.034 rad/s2. How long does it take the wheel to come up to operating speed?
1. The linkage shown is made of two 1.0-meter-long rods. Each rod has a mass of 5 kg. At the instant shown each rod has an angular velocity of -10 rad/s. Gravity acts toward the bottom of the page. What's the acceleration of the point where the 500 N force is applied? 500 N A disc of radius 0.3 m spins at a constant rate of 50 rad/s about its axis (directed toward the ottom of the page), while the...
A motor provides the torque necessary to keep a gear turning at
constant angular velocity, overcoming friction between the gear and
the axle.
The gear can be modeled as a disk, with mass 2 kg, and radius
rg = 0.2 m. The force of friction can be
modeled as a single force, acting at the outer edge of the axle, at
position ra = 0.02 meters, with force of
fk = 10 N.
a) What is the magnitude of the...
A wheel (radius = 0.20 m) starts from rest and rotates with a constant angular acceleration of 2.0 rad/s2. At the instant when the angular velocity is equal to 1.2 rad/s, what is the magnitude of the total linear acceleration (in m/s2) of a point on the rim of the wheel? 0.29 0.4 0.49 0.69
If the motor turns gear A with an angular velocity of 5 rad/s,
the angular velocity of gear D will be
Question Completion Status: 1 2 3 4 5 Question 2 6 7 8 9 10 11 12 13 14 15 16 2 points If the motor turns gear A with an angular velocity of 5 rad/s, the angular velocity of gear D will be 100 mm 50 mm 40 mm 100 mm
QUESTION 5 A figure skater is spinning with an angular velocity of Il rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is 5.9 rad. Determine her average angular acceleration, in SI units, with 3 or more significant figures QUESTION 6 Suppose you exert a force of 171 N tangential to a 0.26 m radius 83 kg grindstone (a solid disk). What is the angular acceleration if there is an...