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Rotational motion
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Questions (1,741)
A certain type of propeller blan can be modeled as a thin uniform bar 2.50 m long and of mass 24.0 kg that is free to rotate
6 answers
asked by
Sarah
2,441 views
The angular speed of a propeller on a boat increases with constant acceleration from 12 rad/s to 26 rad/s in 2.5 revolutions.
5 answers
asked by
Hannah
7,400 views
A pulley of radius 0.5m, on a motor is turning at 30Rev/s and slows down uniformly in 2.0s.calculate ;(a)the angular
5 answers
asked by
jacinta
904 views
What are the conditions for there to be no rotation of a body?
5 answers
asked by
Fiker
443 views
A bullet with a mass m = 4:83 g and initial speed of 330 m/s passes through a wheel which is initially at rest as in the The
5 answers
asked by
Lindsay
1,301 views
A group of students observes that a wooden block (m = 0.40 kg) on the end of a string with a radius of 0.7 meters makes 8
4 answers
asked by
Anonymous
5,765 views
A dentist's drill starts from rest. After 3.20 s of constant angular acceleration it turns at a rate of 2.7 104 rev/min.
(a) Find
7 answers
asked by
Sam
9,950 views
Find the number of revolutions of a bicycle wheel of diameter 0.7m when the bike goes a distance of 22m down the street.
5 answers
asked by
Anonymous
2,462 views
A disk with a mass of 29 kg and a radius of 31 cm is mounted on a frictionless horizontal axle. A string is wound many times
4 answers
asked by
Anonymous
2,329 views
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis
5 answers
asked by
Erin
12,094 views
A Ferris Wheel rotates 3 times each minute. The passengers sit in seats that are 25 feet from the center of the wheel.
A. What is
4 answers
asked by
Manuel
3,653 views
A high-speed sander has a disk 5.70 cm in radius that rotates about its axis at a constant rate of 1120 revolutions per minute.
a
6 answers
asked by
Emily
2,715 views
A bicycle has wheels of radius 0.3 m. Each wheel has a rotational inertia of 0.088 kg× m2 about its axle. The total mass of the
4 answers
asked by
alicia
3,089 views
(a) Calculate the linear acceleration of a car, the 0.280 m radius tires of which have an angular acceleration of 15.0 rad/s2.
4 answers
asked by
Michelle
4,129 views
A long thin rod of mass M = 2:00 kg and length L = 75:0 cm is free to rotate about its
center as shown. Two identical masses
4 answers
asked by
Lindsay
5,738 views
A uniform solid sphere of mass M and radius R is rolling without sliding along a level plane with a speed v = 2.30 m/s when it
5 answers
asked by
Anonymous
1,496 views
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small
4 answers
asked by
rob
4,505 views
Point P is on the rim of a wheel of radius 2.0 m. At time t = 0, the wheel is at rest, and P is on the x axis. The wheel
5 answers
asked by
terry
2,220 views
A 4.50-kg wheel that is 34.5 cm in diameter rotates through an angle of 13.8 rad as it slows down
uniformly from 22.0 rad/s to
4 answers
asked by
help me!!!
11,890 views
At t = 0 s a flywheel is rotating at 25 rpm. A motor gives it a constant acceleration of 0.8 rad/s2 until it reaches 100 rpm.
4 answers
asked by
applebottom
1,116 views
I AM SORRY I JUST HAVE ONE OF THE MOST HORRIBLE TEACHERS, AND I AM TEACHING MYSELF FOR I GET NOTHING IN CLASS.
On an
4 answers
asked by
Chiongo
4,513 views
A small circular object with mass m and radius r has a moment of inertia given by
I = cmr2. The object rolls without slipping
4 answers
asked by
Adam
1,786 views
An electric motor rotating a workshop grinding wheel at a rate of 95 rev/min is switched off. Assume the wheel has a constant
5 answers
asked by
Dani
6,703 views
How much work must be done to accelerate a baton from rest to an angular speed of 7.27 rad/s about its center? Consider the
4 answers
asked by
Megan
1,442 views
An object is spinning at 4 rev/s and starts deccelarting at .9 rev/s^2. How long will it take the object to stop?
4 answers
asked by
mike
901 views
A bucket crane consists of a uniform boom of mass M = 201 kg and length
L = 59.05 ft that pivots at a point on the bed of a fixed
4 answers
asked by
Sara
3,607 views
Two blocks are placed at the ends of a horizontal massless board, as in the drawing. The board is kept from rotating and rests
4 answers
asked by
genius girl
8,441 views
A centrifuge is a device in which small container of material is rotated at a high speed on a circular path. Such a device is a
4 answers
asked by
Kelli
547 views
Four objects - a hoop, a solid cylinder, a solid sphere, and a thin, spherical shell - each has a mass of 4.59 kg and a radius
4 answers
asked by
Ana
7,573 views
A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 24.5
4 answers
asked by
Briana
1,962 views
determine the linear velocity of a point rotating at 15 revolutions per minute at a distance of 3.04 meters from the center of a
4 answers
asked by
anon
2,125 views
a belt drives two flywheels whose diameters are in 30 cm and 40 cm, respectively. If the smaller wheel turns through 300
4 answers
asked by
Cleo
1,418 views
A wheel rotates without friction about a stationary horizontal axis at the center of the wheel.A constant tangential force of
4 answers
asked by
Rash
1,772 views
During 0.19 s, a wheel rotates through an angle of 2.42 rad as a point on the periphery of the wheel moves with a constant speed
5 answers
asked by
Ann
822 views
The net work done in accelerating a propeller
from rest to an angular speed of 110 rad/s is 1822.5 J. What is the moment of
4 answers
asked by
phys101
2,374 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
4 answers
asked by
John
1,492 views
A cord is wrapped around the rim of a wheel .250 m in radius, and a steady pull of 40.0 N is exerted on the cord. The wheel is
4 answers
asked by
Karla
3,703 views
The frequency of rotation of fan change from 2rev/s to 7rev/s in 10sec.find the angular acceleration.
4 answers
asked by
sandip
593 views
. (a) Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.400 kg ⋅ m2. (b)
4 answers
asked by
Justin
5,267 views
Two thin rectangular sheets (0.09 m 0.46 m) are identical. In the first sheet the axis of rotation lies along the 0.09-m side,
4 answers
asked by
chelsea
2,073 views
A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the
4 answers
asked by
Jessica
1,998 views
The turbine and associated rotating parts of a jet engine have a total moment of inertia of 23 kg m2. The turbine is accelerated
4 answers
asked by
HELP!!!!
1,035 views
A wheel with a 21-inch diameter is turning at the rate of 58 revolutions per minute. To the nearest inch, what is the velocity
10 answers
asked by
y912f
4,134 views
A bike wheel rotates uniformly through 2 revolutions in 3 seconds.
a) what is the period of the wheel's rotation? T=3rev/2s=1.5s
5 answers
asked by
Tammy
2,548 views
The angular velocity of a scooter wheel is 20 rad/s. If the diameter of the scooter wheel be 40cm. Calculate the speed of the
4 answers
asked by
farha naaz
1,768 views
A string is wound is tightly around a wheel. When the end of the string is pulled through a distance of 10 cm, the wheel rotates
4 answers
asked by
Amy
3,546 views
A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass of the blade is 0.65kg and its length is
4 answers
asked by
Jc
4,165 views
A flywheel with an axle 1.0cm in diameter is mounted in frictionless bearings and set in motion by applying a steady tension of
5 answers
asked by
Edwin
2,273 views
A 1 m diameter wagon wheel consists of a thin rim having a mass of 6 kg and six spokes each having a mass of 1.5 kg. Determine
4 answers
asked by
MUHAMMAD JUNAID
1,934 views
An automobile is traveling at 65 mph. If each tire has a radius of 15 inches, at which rate are the tires spinning in
4 answers
asked by
Kevin
2,740 views
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