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Rotational motion
Page 6
Questions (1,742)
The flywheel of a steam engine runs with a constant angular speed of 112 rev/ min . When steam is shut off, the friction of the
3 answers
asked by
Ted
612 views
What is the moment of inertia of an object that rolls without slipping down a 2.00-m-high incline starting from rest, and has a
4 answers
asked by
Justin
5,805 views
A bowling ball with a radius of 12 cm is given a backspin (i.e. if you picture the ball moving to the right it is spinning
3 answers
asked by
naf
737 views
A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time
3 answers
asked by
Trevor
1,679 views
A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the
3 answers
asked by
Anonymous
836 views
A centrifuge takes 100 s to spin up from rest to its final angular speed with constant angular acceleration. If a point located
3 answers
asked by
Bloom
3,142 views
A flywheel rotates with an angular speed of 26 rev/s. As it is brought to rest with a constant acceleration, it turns 55 rev.
Wha
3 answers
asked by
Maria
1,559 views
The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in
4 answers
asked by
Nick
8,045 views
A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating speed with an average
3 answers
asked by
michelle
861 views
On an open-reel tape deck, the tape is being pulled past the playback head at a constant linear speed of 0.372 m/s.
(a) If the
3 answers
asked by
Jordan
954 views
A drawing shows a device that can be used to measure the speed of a bullet. The device consists of two rotating disks, separated
4 answers
asked by
Sarah
2,044 views
A centrifuge rotor rotating at 13,000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.30
3 answers
asked by
mas
811 views
(b)A centrifuge has a maximum rotation rate of 10,000 rpm and can be stopped in 4 seconds. Assume the deceleration is uniform.
3 answers
asked by
Oisin
1,520 views
One end of a thin uniform rod, 1.00m in length, is attached to a pivot. The rod is free to rotate about the pivot without
3 answers
asked by
John
716 views
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. The disk has
3 answers
asked by
john
1,372 views
A ball rolls down a hill mainly because of:
a. an unbalanced torque b. an unbalanced force c. its rotational inertia d. angular
6 answers
asked by
Claire
2,071 views
Two children are playing on the seesaw. THe lighter child is 9 feet from the fulcrum, and the heavier child is 6 feet from the
2 answers
asked by
John
677 views
A block with mass m = 5.00 kg slides down a surface inclined 36.9∘ to the horizontal (the figure (Figure 1)). The coefficient
4 answers
asked by
khalid
891 views
A long, thin rod with moment of inertia I=2 kg•m2 is free to rotate about an axis passing through the midpoint of the rod. The
3 answers
asked by
Anonymous
858 views
A 1.5 kg , 20-cm-diameter turntable rotates at 110 rpm on frictionless bearings. Two 550 g blocks fall from above, hit the
3 answers
asked by
Kevin
906 views
A music compact disc does ninety revolutions in one minute. Calculate its angular velocity in rad/s
3 answers
asked by
Portia
950 views
If the beaters on a Mixmaster make 710 revolutions in 4 minutes, what is the average rotational speed of the beaters? Express
4 answers
asked by
hi
1,365 views
A disk with mass m = 9.8 kg and radius R = 0.31 m begins at rest and accelerates uniformly for t = 18.7 s, to a final angular
4 answers
asked by
MUHAMMAD JUNAID
1,532 views
What is the rotational speed of the minute hand on a clock?
4 answers
asked by
Beth
1,414 views
1.) If the penny is at a radius of 6.00 cm spinning at a speed of 3.50 rad/sec. What is the centripetal acceleration of the
4 answers
asked by
Paige
1,191 views
A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other
3 answers
asked by
L
1,232 views
Find the speed of a point on the rim of a 24cm diameter fly wheel which is turning at 2800 revolutions per minute. Give your
3 answers
asked by
Sporsho
617 views
Suppose that a person closes a car door. The person's fingers are in the door opening, that is located 0.50 m from the hinges.
3 answers
asked by
clara
2,133 views
A car is moving from rest .After 10 sec its wheel rotate 360 times in 1 minute. If the radius of the wheel is 50 cm, then find
(1
3 answers
asked by
Pabitra
1,360 views
A few kids decide to go to the park to go on the merry-go-round. They are the only ones there so the merry-go-round is not
3 answers
asked by
Plz
1,199 views
A bug rides on a turntable which is rotating at 3 rad/s. The moto is turned off, and the bug covers 36 radians before coming to
3 answers
asked by
John
701 views
The angular speed of a rotor in a centrifuge increases from 428 to 1400 rad/s in a time of 6.26 s. (a) Obtain the angle through
4 answers
asked by
randy
1,708 views
a 0.30-m radius automobile tire rotates how many rad after starting from rest and accelerating at a constant 2.0 rad/s^2 over a
3 answers
asked by
Natalie
5,413 views
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.54 kg and length L = 5.12 m to a uniform sphere with
3 answers
asked by
stewart
1,759 views
The blades of a ceiling fan have a radius of 0.393 m and are rotating about a fixed axis with an angular velocity of +1.36
2 answers
asked by
Anon
916 views
What linear speed must a 4.0×10−2kg hula hoop have if its total kinetic energy is to be 0.20J ? Assume the hoop rolls on the
3 answers
asked by
Kaitlin
2,375 views
a wheel of a bicycle has a diameter of 70cm and is rotating at the rate of 200 revolutions per minute calculate the speed of the
3 answers
asked by
sashey
1,016 views
a particle takes 6.28seconds to complete one revolution.its angular speed is
2 answers
asked by
ayesha
1,001 views
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 25.0 rad/s2. Find the speed of
3 answers
asked by
koko
780 views
Consider a 59-cm-long lawn mower blade rotating about its center at 2990 rpm.
(a) Calculate the linear speed of the tip of the
4 answers
asked by
Camilla
1,587 views
determine the angular velocity if 11.3 revolutions are completed in 3.9 seconds
3 answers
asked by
Ben
966 views
"A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the
4 answers
asked by
Seth
2,946 views
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration
5 answers
asked by
HELP!!!!
985 views
A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular
7 answers
asked by
ruby
2,419 views
A bicycle wheel is mounted on a fixed, frictionless axle. A massless string is wound around the wheel's rim, and a constant
4 answers
asked by
Gabe
2,743 views
If a discus thrower rotates through the last 45 degrees of a turn in .11 seconds and the distance from the axis of the rotation
4 answers
asked by
Tommy
1,088 views
A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*m^2. The wheel rotates about the axle at a constant
3 answers
asked by
Anonymous
2,192 views
In an amusement park rocket ride, cars are suspended from L = 4.28-m cables attached to rotating arms at a distance of d = 6.10
3 answers
asked by
Sandhya
1,017 views
A wheel has a coonstant rotational acceleration of 3.0 rad/s^2. During a certain 4.0 s interval, it turns through an angle of
3 answers
asked by
laura
672 views
A belt drives two flywheels whose diameters are 30cm and 45cm, respectively. If the smaller wheel turns through 310 rev/min,
3 answers
asked by
dksee
589 views
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