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Rotational motion
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Questions (1,743)
suppose that the surface (radius=r) of the space station is rotating at 35.8 m/s. what must be the value of r for the astronauts
5 answers
asked by
Leah- PLEASE HELP!!! :)
4,362 views
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is
1 answer
asked by
winterWX
660 views
A person is riding a ferris wheel that turns at a constant speeed. The lowest point of the ferris wheel is at ground level.
4 answers
asked by
REALLY URGENT
1,357 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
2,065 views
A record turntable is rotating at 33 and 1/3 rev/min. A watermelon seed is on the turntable 7.5 from the axis of rotation
Calcula
3 answers
asked by
Kristen
1,713 views
A long string is wrapped around a 6.4-cm-diameter cylinder, initially at rest, that is free to rotate on an axle. The string is
1 answer
asked by
M
830 views
You are standing on the equator of the earth (radius 3960 miles). What is your linear and angular speed?
5 answers
asked by
Anonymous
6,772 views
A yo-yo has a rotational inertia of 760 g·cm2 and a mass of 200 g. Its axle radius is 4.0 mm, and its string is 100 cm long.
2 answers
asked by
Xavier Hernandez
672 views
A wheel rotates at 100 revolutions per second. find the angle velocity in radians per second.
4 answers
asked by
makaela
2,007 views
A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm
10 answers
asked by
Amber
2,984 views
A car is traveling with a velocity of 17 m/s on a straight horizontal highway. The wheels of the car have a radius of 48 cm. If
4 answers
asked by
fisha
1,803 views
A wheel rotates about an axis passinG through the centre and perpendicular to the plane with slowly increasinG angular
4 answers
asked by
SAGAR
1,613 views
If the bike wheel is rolled along the ground 10 inches, through what angle does the wheel rotate?
5 answers
asked by
hannah
1,088 views
The angle of a rotating shaft turns in t seconds is given by theta= ω+1/2at^2
and it is given that ω=3 2 rad/s and α=0.6 rad/s
4 answers
asked by
VINNY
1,097 views
A drawbridge is l = 110 feet long when stretched across a river. As shown in the figure below, the two sections of the bridge
4 answers
asked by
Tim
1,761 views
A computerized spin balance machine rotates a 35-inch-diameter tire at 400 revolutions per minute.
(a) Find the road speed (in
5 answers
asked by
Jesse
4,051 views
Suppose the surface (radius = r) of a cylindrical space station is rotating at 29.1 m/s to provide artificial gravity. What must
5 answers
asked by
S
8,551 views
A searchlight rotates at a rate of 2 revolutions per minute. The beam hits a wall located 8 miles away and produces a dot of
5 answers
asked by
Reonea
9,209 views
a model of a helicopter rotor has four blades, each 3.40 m in length from the central shaft to the tip of the blade. The model
4 answers
asked by
Sarah
13,448 views
A cyclist accelerates from rest. After 7 s, the wheels have made 2 revolutions.
a. What is the angular acceleration of the
5 answers
asked by
MUHAMMAD JUNAID
2,897 views
a bicycle with 24inch diameter wheels is traveling at 15mi/hr.
a) Find the angular speed of the wheels in rad/min. b)How many
5 answers
asked by
Dan
19,086 views
A searchlight rotates at a rate of 4 revolutions per minute.?
The beam hits a wall located 13 miles away and produces a dot of
5 answers
asked by
saud
6,091 views
A merry-go-round with a a radius of R = 1.95 m and moment of inertia I = 192 kg-m2 is spinning with an initial angular speed of
5 answers
asked by
Lis
5,558 views
A space station, in the form of a wheel 110 m in diameter, rotates to provide an "artificial gravity" of 3.00 m/s2 for persons
4 answers
asked by
laura
13,487 views
An object whose moment of inertia is 2.5 kg · m^2 experiences the torque shown in the figure below. What is the object's
4 answers
asked by
HELP.
5,408 views
A large horizontal circular platform (M=143.1 kg, r=3.01 m) rotates about a frictionless vertical axle. A student (m=75.3 kg)
6 answers
asked by
Molly
2,815 views
A child exerts a tangential 43.5-N force on the rim of a disk-shaped merry-go-round with a radius of 2.41 m. If the
4 answers
asked by
Sarah
3,475 views
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine
4 answers
asked by
kyle
6,144 views
Calculate the angular momentum and kinetic energy of a solid uniform sphere with a radius of 0.120 m and a mass of 14.0 kg if it
4 answers
asked by
Sarah
2,523 views
A paddle boat is propelled to the left in the figure above by a wheel of nine flat blades that rotate about a central axis.
4 answers
asked by
Help
1,337 views
A 500 g steel block
rotates on a steel table while attached to a 2.0-m-long massless rod. Compressed air fed through the rod is
4 answers
asked by
Kathleen
3,116 views
a pulley of 5cm radius on a motor is turning at 30 rev/s and slows down uniformly to 20 rev/s in 2s. calculate the angular
4 answers
asked by
Anonymous
3,287 views
If a cylindrical space station 300m in diameter is to spin about its central axis, at how many revolutions per minute rpm must
4 answers
asked by
Carmen
2,444 views
A toy train rolls around a horizontal 1.0-{\rm m}-diameter track. The coefficient of rolling friction is 0.15. What is the
5 answers
asked by
Anonymous
3,949 views
M, a solid cylinder (M=2.35 kg, R=0.111 m) pivots on a thin, fixed, frictionless bearing. A string wrapped around the cylinder
7 answers
asked by
Tomas
8,473 views
Roxanne is making a strawberry milkshake in her blender. A tiny .0050-kg strawberry is rapidly spun aroundhe inside of the
5 answers
asked by
julia
2,227 views
Suppose that a disk rotates through two revolutions in 5.5 seconds.
(a) What is its displacement in radians in this time? (b)
4 answers
asked by
Anonymous
3,461 views
Calculate the speed at the edge of a disc of radius 8.5 cm that rotates at the rate of 4 rev/s. Answer should be in units of m/s
4 answers
asked by
Bob
3,250 views
A baseball pitcher throws a baseball horizontally at a linear speed of 50.6 m/s. Before being caught, the baseball travels a
5 answers
asked by
Anonymous
2,772 views
A large turntable rotates about a fixed vertical axis, making one revolution in 6.00 s. The moment of inertia of the turntable
10 answers
asked by
Sarah
3,841 views
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
2,456 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
7,412 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
912 views
What are the conditions for there to be no rotation of a body?
5 answers
asked by
Fiker
445 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
1,307 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
5,771 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
9,958 views
A 1.00kg ball and a 2.00kg ball are connected by a 4.63m long rigid, massless rod. The rod is rotating clockwise about its
4 answers
asked by
Syed
5,228 views
A bicycle wheel is accelerating at the constant rate of 1.4 rev/s2
(a) If it starts from rest, what is the rotational velocity
4 answers
asked by
Anonymous
1,307 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
2,472 views
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