Physics Circular Motion Level: Misc Level
An angular acceleration of 1200 rev/min2 when expressed in radians/s2 is ?
Physics Circular Motion Level: Misc Level
A space station,in the form of a wheel 120 m in diameter, rotates to provide an artificial gravity"of 3.00 m/s2 for persons who walk around on the inner wall of the outer rim.Find the rate of rotation of the wheel (in revolutions per minute)that will produce this effect.
Physics Circular Motion Level: Misc Level
A person with a ponytail 25 cm long, is using a lathe which is turning at 300 rpm. The person turns their head, catching the end of the ponytail in the workpiece, which has a diameter of 7 cm. How long will it take the person,s head to be dragged into the lathe?
Physics Circular Motion Level: Misc Level
An object is moving in a circular path of radius 1 m with a uniform speed of 1.0 x 106 m/s. The acceleration of the object has a magnitude of:
(a) 1.0 x 10 3 m/s2
(b) 0
(c) 1.0 x106 m/s2
(d) 1.0 x10 12 m/s2
Physics Circular Motion Level: Misc Level
A soccer ball whose radius is 11 cm rolls a distance of 10 m in 3.50 s. What is the angular speed of the ball?
a. 13 m/s
b. 26 m/s
c. 39 m/s
d. 52 m/s
Physics Circular Motion Level: Misc Level
A child is riding a merry- round which completes one revolution every 8.36 s. The child is standing 4.65 m from the center of the merry -go round. What is the tangential speed of the child?
a. 5.64 m/s
b. 3.49 m/s
c. 0.556 m/s
d. 1.80 m/s
Physics Circular Motion Level: Misc Level
A wheel rotates through an angle of 13.8 rad as it slows down from 22.0 rad/s to 13.5 rad/s. What is the magnitude of the average angular acceleration of the wheel?
a. 0.616 rad /s squared.
b. 111 rad/s squared.
c. 22.5 rad/s squared.
d. 10.9 rad /s squared.
Physics Circular Motion Level: Misc Level
A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s to power of (exponent). Through what angle has the wheel turned when its angular speed reaches 72.0 rad/s?
a. 83.2 rad
b. 697 rad
c. 66.8 rad
d. 948 rad
Physics Circular Motion Level: Misc Level
An object is moving in a circular path with an angular speed of 1.52 rad/s. How long does it take the object to complete one revolution?
a. 4.13 s
b. 2.07 s
c. 118 s
d. 4.77 s
Physics Circular Motion Level: Misc Level
A hair dryer draws 8.4 A when plugged into a 1.2 V line.
a.What is its resistance?
b. How much charge passes through it in 15 min?
(Assume direct current.)
Physics Circular Motion Level: Misc Level
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.27 radians /s 2. It accelerates for 34.3 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 51.1 s after it begins rotating.
Physics Circular Motion Level: Misc Level
An auto engine idling at 500 R P M acquires on depressing the acceleration a final angular velocity of 3500 R P M in 3 seconds. The total angular displacement is ?
Physics Circular Motion Level: Misc Level
A solid sphere of radius R rotates about a diameter with an angular speed w. The sphere then collapses under the action of internal forces to a final radius R/2. What is the final angular speed of the sphere?
Physics Circular Motion Level: Misc Level
A roulette wheel with a 1.0- m radius reaches a maximum angular speed of 18 rad /s before it stops 35 revolutions (220) rad) after attaining the maximum speed. How long did it take the wheel to stop?
Physics Circular Motion Level: Misc Level
A grindstone of radius 4.0 m is initially spinning with an angular speed of 9.0 rad /s. The angular speed is then increaded to 10 rad /s over the next 4.0 seconds. Assuming that the angular acceleration is constant.What is the average angular speed of the grindstone?
