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Angular motion
Page 3
Questions (223)
As a result of friction, the angular speed of a wheel changes with time according to
dθ/dt = ω0 *e^-(σ*t) where ω0 and σ are
1 answer
asked by
eric
1,009 views
The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a
2 answers
asked by
Anonymous
1,122 views
A wheel's uniform angular acceleration is constant. Initially its angular velocity is zero. During the first 1.0 s time
2 answers
asked by
Megan
496 views
In the process of starting up the car plant, a turbine accelerates from rest at 0.49 rad/s^2 .How long does it take to reach its
2 answers
asked by
Sandy
509 views
A stationary 50 kg circular object (r0=.25m) is on a 30 degree incline. The coefficient of rolling friction between the block
1 answer
asked by
Phys
388 views
At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 25.0 rad/s^2 until
6 answers
asked by
Samantha
1,571 views
After fixing a flat tire on a bicycle you give the wheel a spin.
(a) If its initial angular speed was 5.17 rad/s and it rotated
2 answers
asked by
sally
568 views
A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 x 10^2
2 answers
asked by
Mary
1,249 views
In what circumstances can the angular velocity of system of particles change without any change in the system\'s angular
4 answers
asked by
lol
2,381 views
A cooling fan is turned off when it is running at 870 rev/min. It turns 1200 revolutions before it comes to a stop.
What was the
4 answers
asked by
Anonymous
1,811 views
At t=0 a grinding wheel has an angular velocity of 24.0rad/s . It has a constant angular acceleration of 35.0rad/s2 until a
3 answers
asked by
JADE
1,726 views
The wheels of a skateboard roll without slipping as it accelerates at 0.45 m/s2 down an 75-m-long hill.
If the skateboarder
4 answers
asked by
Anonymous
1,590 views
a flywheel makes300.rpm. find the angular speed of any point on the wheel and the linear speed(tangential) of a point 5.00m from
3 answers
asked by
EMMA
1,485 views
A person is riding a bicycle, and its wheels have an angular velocity of 17.7 rad/s. Then, the brakes are applied and the bike
3 answers
asked by
Maggie
1,393 views
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.20 104 rad/s to an angular speed of 3.14
3 answers
asked by
Sam
1,408 views
A constant torque of 27.2 N · m is applied to
a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular
3 answers
asked by
Leah
1,421 views
A disk starts at rest and accelerates with a constant angular acceleration α. After the disk completes one complete revolution,
2 answers
asked by
Liina
1,341 views
A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 102
1 answer
asked by
Mary
1,314 views
A record turntable rotating at 33 1/3 rev/min slows down and stops in 36s after the motor is turned off.
(a) Find its (constant)
2 answers
asked by
Anonymous
1,267 views
A wheel accelerates from rest to 59 rad/s at a rate of 58 rad/s^2 What is the angular displacement of the wheel???
A) 24 rad B)
1 answer
asked by
Katelyn
1,189 views
After 10.0 s, a spinning roulette wheel at a casino has slowed down to an angular velocity of +1.56 rad/s. During this time, the
1 answer
asked by
Danica
1,196 views
A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement?
Help me get this answer please.
2 answers
asked by
Chris
1,087 views
A pitcher throws a curveball that reaches the catcher in 0.65 s. The ball curves because it is spinning at an average angular
2 answers
asked by
Tyler
1,086 views
1. It has been suggested that rotating cylinders about 11 mi long and 5.2 mi in diameter be placed in space and used as
2 answers
asked by
Elisa
1,072 views
a wheel rotating at 1800 rpm slows down uniformly to 1200 rpm in 2.0 sec. calculate a)the angular acceleration (revs/s^2) of the
3 answers
asked by
EMMA
1,071 views
the tape in a videotape cassette has a total
length 256 m and can play for 2.3 h. As the tape starts to play, the full reel has
2 answers
asked by
aquead
1,061 views
ω= 2.4π radians/second
Δθ= 1.0π radians Δt= d What is the value of d? answer in units of seconds.
2 answers
asked by
Anonymous
1,041 views
Your electric drill rotates initially at 5.11 rad/s. You slide the speed control and cause the drill to undergo constant angular
2 answers
asked by
Kate
1,063 views
An ice skater spins with his arms outstretched. When he pulls his arms in and raises them above his head he spins much faster
3 answers
asked by
Nate
1,060 views
A figure skater is spinning with an initial angular speed of 6.9rad/s. She then pulls her arms in, reducing her moment of
2 answers
asked by
Jackie
1,048 views
A tire placed on a balancing machine in a service station starts from rest and turns through 10.8 revolutions in 8.48 s before
2 answers
asked by
Emily
1,017 views
A dentist's drill starts from rest. After 3.62 s of constant angular acceleration it turns at a rate of 2.70E+4 revolutions per
1 answer
asked by
Arthur
1,024 views
3) Joe has a playing time of 74 minutes. When the music starts, the CD rotating at an angular speed of 480 revolutions per
2 answers
asked by
Bob
1,028 views
A torque of 0.97 N-m is applied to a bicycle wheel of radius 0.35 m and mass 0.75 kg. Treating the wheel as a hoop, find its
2 answers
asked by
pakilina
997 views
A fish takes the bait and pulls on the line with a force of 2.2 N. The fishing reel, which has a friction clutch that exerts a
1 answer
asked by
Cooper
953 views
A figure skater is spinning with an angular velocity of +10 rad/s. She then comes to a stop over a brief period of time. During
1 answer
asked by
david
965 views
A ceiling fan has two different angular speed settings: 1 = 475 rev/min and 2 = 170 rev/min. What is the ratio a1/a2 of the
1 answer
asked by
CJ
965 views
A disk of mass m is spinning freely at 6.22 rad/s when a second disk of identical mass, initially not spinning, is dropped on it
3 answers
asked by
alba
943 views
A person sits on a frictionless stool that is free to rotate but is initally at rest. The person holding a bicycle wheel (I = 3
3 answers
asked by
LESTER
893 views
a wheel having diameter 2m starts from rest and accelerates uniformly to an angular velocity of 75 revoulutions per minute in
3 answers
asked by
vishal
908 views
A machine part rotates at an angular speed
of 0.77 rad/s; its speed is then increased to 1.76 rad/s using an angular acceleration
2 answers
asked by
Anonymous
889 views
A student on a piano stool rotates freely with an angular speed of 2.95 rad/s . The student holds a 1.35 kg mass in each
1 answer
asked by
marie
881 views
A string is wound around the edge of a solid 1.60 kg disk with a 0.130 m radius. The disk is initially at rest when the string
2 answers
asked by
cinn
863 views
A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement? In rad.
1 answer
asked by
Chris
818 views
A large turntable rotates about a fixed vertical axis, making one revolution in 6.00 s. The moment of inertia of the turntable
2 answers
asked by
Sarah
846 views
The angular displacement in radians is given by: θ=8√(t^2+2)
Find the angular velocity and angular acceleration at t = 0.25 s.
1 answer
asked by
Preet
817 views
A child of mass 40 kg stands beside a circular platform of mass 100 kg and radius 1.8 m spinning at 2.6 rad/s. Treat the
1 answer
asked by
John
830 views
A hockey player's arm and stick form a 1.6 m rigid segment. If the angular speed of the player's arm/stick is 1.2 rad/s,
1 answer
asked by
Tori
830 views
A centrifuge in a medical laboratory rotates at an angular speed of 3800 rev/min. When switched off, it rotates through 46.0
2 answers
asked by
john
833 views
A 5.0 kg skater begins a spin with an angular speed of 4 rad/s. By changing the position of her arms, the skater decreases her
2 answers
asked by
Jose Luis
819 views
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Parent Categories (10)
Dynamics
Kinematics
Mechanics
Mechanics / Motion
Mechanics of Motion
Motion
Motion and Forces
Physics
Projectile Motion
Rotation