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Rotational motion
Page 5
Questions (1,741)
A fan blade, initially
at rest, rotates with a constant acceleration of 0.025 rad/s 2 . What is the tim e interval required for
4 answers
asked by
steve lucas
3,235 views
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.45 rad/s2. It accelerates
3 answers
asked by
Sue
2,559 views
The 4.00-kg block in the figure is attached to a vertical rod by means of two strings. When the system rotates about the axis of
4 answers
asked by
Allison
2,835 views
A small 520-gram ball on the end of a thin, light rod is rotated in a horizontal circle of radius 1.5 m. Calculate the moment of
4 answers
asked by
Anonymous
2,677 views
A merry-go-round rotates at the rate of.2rev/s with an 80kg man standing at a point 2m from the axis ofrotation. (A)What is the
4 answers
asked by
Justin
2,218 views
a remote controlled car's wheel accelerates at 22.4 rad/s^2. if the wheel begins with an angular speed of 10.8 rad/s what is the
4 answers
asked by
luke
5,157 views
You are a 70 kg astronaut floating at rest in zero gravity holding your laptop. Your hard drive turns on (increasing from 0 to
4 answers
asked by
Charles
446 views
A governor (centrifugal pendulum) consists of two 200–g spheres attached by light, rigid 10.0–cm rods to a vertical rotating
4 answers
asked by
Chrxeyshthoufov
1,849 views
During 0.21 s, a wheel rotates through an angle of 2.10 rad as a point on the periphery of the wheel moves with a constant speed
4 answers
asked by
keb
642 views
A compact disk rotates from rest to 500 rev/min. in 5.5s.
a) What is the angular acceleration assuming it is constant. b) How
3 answers
asked by
Jenny
1,175 views
A small disk of radius R1 is mounted coaxially with a larger disk of radius R2. The disks are securely fastened to each other
4 answers
asked by
John
5,930 views
It has been suggested that rotating cylinders about 10 mi long and 5.6 mi in diameter be placed in space and used as colonies.
4 answers
asked by
Alexander
1,553 views
An ice skater rotating around a vertical axis increases in angular velocityfrom 450degrees/s to 610degrees/s in 2.3 seconds.
4 answers
asked by
stew
781 views
At what rate must a cylindrical spaceship rotate if occupants ar to experience simulated gravity of 1/2g? Assume the spaceship's
4 answers
asked by
Sam
3,316 views
Two particles (m1 = 0.20 kg, m2 = 0.30 kg) are positioned at the ends of a 2.0-m long rod of negligible mass. What is the moment
4 answers
asked by
hh
670 views
An early major objection to the idea that the earth rotates on its axis was that it would have
to turn so fast that people would
4 answers
asked by
Nevaeh
1,589 views
A rotating flywheel of diameter 48.0 cm uniformly accelerates from rest to 240 rad/s in 15.0 s. Find the linear velocity of a
4 answers
asked by
joy
810 views
One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has
4 answers
asked by
roni
4,938 views
We can roughly model a gumnastic tumbler as a uniform solid cylinder of mass 75 kg and diameter 1.0 m. If the tumbler rolls
5 answers
asked by
Sarah
1,022 views
In the spin cycle of a clothes washer, the drum turns at 635 rev/min. If the lid of the washer is opened, the motor is turned
4 answers
asked by
Destiny
1,985 views
A 21-kg child starts at the center of a playground merry-go-round that has a radius of 3.5 m and rotational inertia of 500
4 answers
asked by
Jordann
3,435 views
The blades of a fan running at low speed turn at 200 rpm. When the fan is switched to high speed, the rotation rate increases
4 answers
asked by
Kelsey
2,271 views
The outer edge of a truck tire that has a radius of 25 cm has a velocity of 26 m/s. What is the angular velocity of the tire in
4 answers
asked by
javane
1,441 views
1.If a mass is 15 cm from the axis of rotation and makes 25 revolutions in 10 seconds, what is its speed in m/s?
2.If m = 0.1 kg
4 answers
asked by
Derek
1,622 views
Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At what time after the start of
4 answers
asked by
Ashley
2,706 views
An electric circular saw is designed to reach its final angular speed, starting from rest, in 1.50s. Its average angular
4 answers
asked by
Remie
2,397 views
A wheel rotating initially at an angular velocity of 1.0 rad/s, accelerates over a 10 S interval at a rate of 0.1 rad/s^2. What
4 answers
asked by
Joey
950 views
A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope
4 answers
asked by
Ashley
3,200 views
On your first day at work for an appliance manufacturer, you are told to figure out what to do to the period of rotation during
4 answers
asked by
johnny
1,595 views
Hello,
The question is: A solid ball rolls along the floor with a constant linear speed v. Find the fraction of its total kinetic
4 answers
asked by
Ben
813 views
An electric motor turns at 2400 revolutions per minute or 2400 r/m.
Find the angular velocity, in radians per second, in exact
5 answers
asked by
Anonymous
1,288 views
The speed of the tip of a second hand of length 5 cm of a clock is m/s
4 answers
asked by
Rahul
2,838 views
What is the linear acceleration of a point on the rim of a 38 cm-diameter record rotating at 33 1/3 rev/min?
3 answers
asked by
Sara
1,544 views
At the start of your throw of a 5.6-kg bowling ball, your arm is straight behind you and horizontal (Figure 1) . Your arm is
3 answers
asked by
Cosmo
1,564 views
A centrifuge in a medical laboratory rotates at an angular speed of 3,550 rev/min. When switched off, it rotates through 54.0
3 answers
asked by
jojo
3,703 views
Express the angular velocity of 36 rpm (revolutions per minute) in units of radians per second (rad/s).
2 answers
asked by
phys 220
1,003 views
A student sits on a rotating stool holding two 3.4-kg objects. When his arms are extended horizontally, the objects are 1.0 m
4 answers
asked by
Jessica
8,814 views
An object is rotating with an angular momentum 4.00 kg m2/s while being acted on by a constant torque 3.00 Nm. What is the
3 answers
asked by
Elyse
2,750 views
A uniform solid cylinder of radius R and a thin uniform spherical shell of radius R both roll without slipping. If both objects
3 answers
asked by
saud
5,620 views
how do i find the revolutions per minute of a pulley that is turned 120 degrees per second?
4 answers
asked by
Thomas
990 views
A skater spins with an angular speed of 12.4 rad/s with her arms outstretched. She lowers her arms, decreasing her moment of
4 answers
asked by
Tessa
3,092 views
When a pitcher throws a curve ball, the ball is given a fairly rapid spin. A 0.15 kg baseball with a radius of 3.7 cm is thrown
4 answers
asked by
kelsey
1,432 views
A 175 kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope
4 answers
asked by
Elisa
1,707 views
What is the angular speed ω about the polar axis of a point on Earth's (a) What is the angular speed ω about the polar axis of
3 answers
asked by
califeux
4,587 views
Two children (m = 34.0 kg each) stand opposite each other on the edge of a merry-go-round. The merry-go-round, which has a mass
3 answers
asked by
Anonymous
1,771 views
a flywheel of mass 200 kg is rotating at the rate of 8 rps . find the constant torque required to stop the disc in 11 rotations.
3 answers
asked by
rutuja
734 views
a thin metal ring of diameter is 0.6m and mass 1 kg starts rest and rolls down inclined plan.Its linear velocity is 5m/s
3 answers
asked by
Md shaheen Mahmud
1,405 views
A student holds a bike wheel and starts it spinning with an initial angular speed of 7.0 rotations per second. The wheel is
4 answers
asked by
Morgan
4,448 views
A lathe, initially at rest, accelerates at .60 rad/s^2 for 10s, then runs at a constant angular velocity for 20s, and finally
3 answers
asked by
Joe
1,490 views
A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7s have elapsed, it has rotated
4 answers
asked by
Ann
1,443 views
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