Wednesday
August 20, 2014

Search: physics-angular speed

Number of results: 60,358

Physics
A grindstone of radius 4.0m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 12 rad/s over 4.0s. Assume that the angular acceleration is constant. What is the average angular speed of grindstone?
April 2, 2012 by Natasha

Physics
A skater spinning with angular speed of 1.5 rad/s draws in her outstretched arms thereby reducing her moment of inertia by a factor a 3. a) Find her angular speed. b)What is the ratio of her final angular momentum to her initial angular momentum? c)Did her mechanical energy ...
December 2, 2010 by Tarren

Physics(Please help)
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.44 x 104 rad/s to an angular speed of 5.05 x 104 rad/s. In the process, the bit turns through 1.77 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to ...
June 7, 2012 by Hannah

physics help
An electric circular saw is designed to reach its final angular speed, starting from rest, in 1.16 s. Its average angular acceleration is 375 rad/s2. Obtain its final angular speed.
November 19, 2010 by harry

Physics
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting from rest to attain its maximum angular speed, of 1 revolution every 0.5s. What is the angular acceleration that the wheel experienced in order to ...
February 20, 2012 by Brittany

PHYSICS
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting from rest to attain its maximum angular speed, of 1 revolution every 0.5s. What is the angular acceleration that the wheel experienced in order to ...
February 20, 2012 by Brittany

Physics
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.20x10^4 rad/s to an angular speed of 3.14x10^4 rad/s. In the process, the bit turns through 1.92x10^4 rad. Assuming a constant angular acceleration, how long would it take the bit to reach ...
October 23, 2012 by Sam

Physics
A centrifuge takes 100 s to spin up from rest to its final angular speed with constant angular acceleration. If a point located 8.00 cm from the axis of rotation of the centrifuge moves with a speed of 150 m/s when the centrifuge is at full speed, how many revolutions does the...
June 24, 2012 by Bloom

science- physics
A rotating wheel requires 4.17 s to rotate through 37 rev. Its angular speed at the end of the 4.17 s interval is 104 rad/s. What is its constant angular acceleration? Assume the angular acceleration has the same sign as the angular velocity.
October 19, 2012 by joe

Physics
As seen from above, a playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars on the carousel very close to its outer edge and climbs aboard. Thus, this person begins with an ...
November 3, 2012 by Sam

Physics
A flywheel with a diameter of 2.45 m is rotating at an angular speed of 74.1 rev/min. (a) What is the angular speed of the flywheel in radians per second? (b) What is the linear speed of a point on the rim of the flywheel? (c) What constant angular acceleration (in revolutions...
November 9, 2011 by kyle

Physics
Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At what time after the start of rotation does the wheel reach an angular speed equal to its average angular speed for this interval?
June 8, 2010 by Ashley

Physics
In a tape recorder, the magnetic tape moves at a constant linear speed of 5.6 cm/s. To maintain this constant linear speed, the angular speed of the driving spool (the take-up spool) has to change accordingly. (a) What is the angular speed of the take-up spool when it is empty...
October 21, 2011 by mymi

Physics!
A wheel rotates with a constant angular acceleration of 3.50 rad/s2. The angular speed of the wheel is 2.00 rad/s at t = 0. If the radius of the wheel is doubled, Are the following statements affected? If so, in what way? (Select all that apply.) (1)The angular speed at t = 2....
December 1, 2009 by Diane M.

Physics
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 18.00 rad/s. The temperature of the wheel changes from -100.0 to +300.0 degrees Celcius. No net external torque acts on the wheel, and the mass of the spokes is negligible. (a) Does the...
February 15, 2011 by Heather

Physics/Chemistry
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 18.00 rad/s. The temperature of the wheel changes from -100.0 to +300.0 degrees Celcius. No net external torque acts on the wheel, and the mass of the spokes is negligible. (a) Does ...
February 15, 2011 by Heather

physics
A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it ...
November 3, 2011 by marie

Physics
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 3.14 104 rad/s. In the process, the bit turns through 1.92 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its...
October 22, 2012 by Sam

physics
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.50 x 104 rad/s to an angular speed of 3.76 x 104 rad/s. In the process, the bit turns through 3.13 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to ...
April 9, 2014 by Anonymous

physics
an airplane propeller slows from an initial angular speed of 12.5rev/s to a final angular speed of 5rev/s during the process the propeller rotates through 21 rev. find the angular acceleration of the propeller if in radians per second squared, assuming its constant?
April 26, 2012 by adan

Physics
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of 0.180 rad/s2. After making 2874 revolutions, its angular speed is 139 rad/s. A. What is the initial angular ...
March 30, 2012 by Natasha

physics
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.170 rad/s2. After making 2870 revolutions, its angular speed is 131 rad/s. (a) What is the initial angular ...
July 16, 2013 by kyle

Physics
1) A circular disk 0.20m in diameter starts from rest and accelerates with constant angular acceleration to an angular acceleration to an angular velocity of 210 rad/s in 10.00s. Find the angular acceleration and the angle which the disk has turned in degrees. 2) A car with ...
April 9, 2013 by Anonymous

physics
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 7.8 rad/s; 60 radians later, its angular speed is 19 rad/s. Calculate (a) the angular acceleration (rad/s2), (b) the time required to ...
November 13, 2013 by kristy

physics
as i have known that centripetal force is directly proportional to the angular speed square. so, what is the relationship between angular speed and centripetal force ? when centripetal force increase, does angular speed increase too? i need more explanation.
July 29, 2013 by kate

Physics
A solid disk with a mass ok 100 kg and radius of 0.2m turns clockwise through an angular displacement 10 rad when starting from rest attain its maximum angular speed of 1 revolution every 0.5s. How much time did it take for the disk to go from rest to maximum angular speed?
February 21, 2012 by Brittany

Physics Please Help!
A solid disk with a mass ok 100 kg and radius of 0.2m turns clockwise through an angular displacement 10 rad when starting from rest attain its maximum angular speed of 1 revolution every 0.5s. How much time did it take for the disk to go from rest to maximum angular speed?
February 21, 2012 by Brittany

college physics (inertia)
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 constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ...
March 30, 2010 by eric

college physics (inertia)
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 constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ...
March 30, 2010 by eric

college physics (inertia)
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 constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ...
March 30, 2010 by eric

Radians
The angular speed of a large pulley wheel that has a radius of 15, is 50 revolutions/min. Find the angular speed and the rim speed of the smaller wheel that has a radius of 5. The rim speed is going to be the same. I got the angular speed but I can't figure out why the rim ...
April 5, 2011 by Jessica

Physics, please help me today.
four pulleys are connected by two belts. Pulley A (radius 15cm) is the drive pulley and it rotates at 10 rad/s. Pulley B (radius 10 cm) is connected by belt 1 to pulley A. Pulley B' (radius 5cm) is concentric with pulley B and is rigidly attached to it. Pulley C (radius 25cm) ...
November 17, 2006 by Dawn

physics
As a result of friction, the angular speed of a wheel changes with time according to d(theta)/dt = w0 e^-(aplpha*t) where w0 and alpha are constants. The angular speed changes from an initial angular speed of 4.87 rad/s to 4.27 rad/s in 33.93s. A) Determine the magnitude of ...
October 26, 2012 by michelle

Physics HELP!
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/ min. When switched off, it rotates through 41.0 revolutions before coming to rest. (a) Find the angular speed in rad/s. (b) Find the displacement in radians. (c) Find the constant angular ...
October 26, 2012 by Mel

physics
The balance wheel of a watch oscillates with angular amplitude 1.7π rad and period 0.64 s. Find (a) the maximum angular speed of the wheel, (b) the angular speed of the wheel at displacement 1.7π/2 rad, and (c) the magnitude of the angular acceleration at ...
January 9, 2011 by kylie

Physics- Elena please help!!!!
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/ min. When switched off, it rotates through 41.0 revolutions before coming to rest. (a) Find the angular speed in rad/s. (b) Find the displacement in radians. (c) Find the constant angular ...
October 29, 2012 by Tom

Physics Angular Motion
A wheel with a radius of 1.5m rotates at uniform angular speed. If a point on the rim of the wheel has a centripetal acceleration of 1.2 m/s/s whats the points tangential speed?
August 4, 2013 by Xian

physics
What is the angular momentum (in kilogram-meter^2/second) of a 300.0 g ball rotating on the end of a string in a circle of radius 1.87 m at an angular speed of 1.50 rad/s? Is there certain equations to find angular momentum for different shapes?
April 12, 2012 by Jessica

Physics help please!!!
The angular speed of digital video discs (DVDs) varies with whether the inner or outer part of the disc is being read. (CDs function in the same way.) Over a 133 min playing time, the angular speed varies from 570 rpm to 1600 rpm. Assuming it to be constant, what is the ...
February 18, 2012 by john

physics
5) A person on a motor cycle gains a speed of 10kmph to 60kmph in 10 secs. The angular rotation of the needle in the speedometer is about 200 degrees. What will be the angular speed in degrees/sec?
August 8, 2011 by Anonymous

physics
The drive propeller of a ship starts from rest and accelerates at 3.00 10-3 rad/s2 for 2.05 103 s. For the next 1.75 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
November 10, 2011 by Marco

physics
A skater spinning with angular speed of 1.5 rad/s draws in her outstretched arms thereby reducing her moment of inertia by a factor a 3. a) Find her final angular speed. b)What is the ratio of her final angular momentum to her initial angular momentum? c) Determine the ratio ...
December 2, 2010 by Kevin

physics
Some bacteria are propelled by biological motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.70e-8 m, and a tangential speed at the rim of 2.32 e-5 m/s. a) What is the angular speed (the magnitude of the ...
March 30, 2012 by Natasha

Physics
Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x10-8m, and a tangential speed at the rim of 2.5x10-5 m/s. (a) What is the angular speed (the magnitude of the angular ...
June 7, 2012 by Jessi

Physics
An automatic drier spins wet clothes at an angular speed of 4.8 rad/s. Starting from rest, the drier reaches its operating speed with an average angular acceleration of 3.6 rad/s2. How long does it take the drier to come up to speed?
March 6, 2008 by Zach

physics
An automatic dryer spins wet clothes at an angular speed of 4.4 rad/s. Starting from rest, the dryer reaches its operating speed with an average angular acceleration of 4.2 rad/s2. How long does it take the dryer to come up to speed?
July 16, 2013 by fred

Physics
A carousel at a carnival has a diameter of 6.0 m. The ride starts from rest and accelerates at a constant angular acceleration to an angular speed of 0.7 rev/s in 8.8 s. (a) What is the value of the angular acceleration? 1 0.499 rad/s^2 (b) What are the centripetal and angular...
October 21, 2011 by mymi

physics
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 7 rev/s. 55 revolutions later, its angular speed is 21 rev/s. (a) Calculate the angular acceleration. (b) Calculate the time required to ...
March 11, 2007 by winterWX

Physics
A figure skater is spinning with an initial angular speed of 6.9rad/s. She then pulls her arms in, reducing her moment of inertia to 0.38 times its original value. What is her angular speed after pulling in her arms?
March 8, 2012 by Jackie

Physics
Pilots can be tested for the stresses of flying high-speed jets in a whirling "human centrifuge," which takes 1.8 min to turn through 21 complete revolutions before reaching its final speed. 1. What is the angular acceleration?(rev/min^2) 2. What is the final angular speed in ...
March 5, 2012 by Ben

physics
A centrifuge in a medical laboratory rotates at an angular speed of 3300 rev/ min. When switched off, it rotates through 59.0 revolutions before coming to rest. (a) Find the angular speed in rad/s.
November 4, 2012 by Anonymous

Physics(Please help)
Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x10-8m, and a tangential speed at the rim of 2.7x10-5 m/s. (a) What is the angular speed (the magnitude of the angular ...
June 9, 2012 by Hannah

Physics(Please respond)
Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x10-8m, and a tangential speed at the rim of 2.7x10-5 m/s. (a) What is the angular speed (the magnitude of the angular ...
June 8, 2012 by Hannah

physics
A machine part rotates at an angular speed of 0.38 rad/s; its speed is then increased to 3.46 rad/s using an angular acceleration of 0.61 rad/s2. Find the angle through which the part ro- tates before reaching this final speed. Answer in units of rad
October 21, 2011 by phys101

physics
A 4.00-m length of light nylon cord is wound around a uniform cylindrical spool of radius 0.500 m and mass 1.00 kg. The spool is mounted on a frictionless axle and is initially at rest. The cord is pulled from the spool with a constant acceleration of magnitude 2.86 m/s2. (a) ...
March 19, 2012 by Mike

Physics
A diver performing a double somersault spins at an angular speed of 4.5 π rad/s precisely 0.70s after leaving the platform. Assuming the diver begins with zero initial angular speed and accelerates at a constant rate, what is the diverís angular acceleration during the ...
March 28, 2012 by Ethan

Physics
Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 1.2 10-3 rad/s, while the other has an angular speed of 3.4 10-3 rad/s. How long will it be before they meet?
March 26, 2008 by Erich

physics
Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 2.46 x 10-3 rad/s, while the other has an angular speed of 7.91 x 10-3 rad/s. How long will it be before they meet?
July 16, 2013 by cindy

PHYSICS 3
A solid disk (mass = 1 kg, R=0.5 m) is rolling across a table with a translational speed of 9 m/s. a.) What must the angular speed of the disk be? rad/s d.) The disk then rolls up a hill of height 2 m, where the ground again levels out. Find the translational and rotational ...
October 20, 2008 by kelsey

Physics
A wheel turns through 90.0 revolutions in 15.0 sec. The angular speed at the end of this 15.0 sec period is 10.0 rev/s. Assuming that the angular acceleration is constant, calculate a) the angular speed at the beginning of the 15.0 sec interval, and b) the amount of time that ...
May 5, 2014 by TP

Physics
Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.10 10-3 rad/s, while the other has an angular speed of 3.90 10-3 rad/s. How long will it be before they meet?
October 24, 2010 by Dawn

physics
Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.40 10-3 rad/s, while the other has an angular speed of 3.10 10-3 rad/s. How long will it be before they meet?
November 2, 2010 by Danica

physics
What is the angular momentum of a 0.200- ball rotating on the end of a thin string in a circle of radius 1.45 at an angular speed of 13.0 ?
May 6, 2012 by juan

Physics
A 0.58- kg flashlight is swung at the end of a string in a horizontal circle of 0.85- m radius with a constant angular speed. If no torque is applied, what must the radius become if the angular speed of the flashlight is to be halved?
November 18, 2009 by kate

Angular acceleration
A flywheel of 480 mm diameter is accelerated with an angular velocity of 0.4 rad/s^-2 from rest by an electric motor until it is rotating at 400 revs/minute. Calculate: a) the time of acceleration b) the linear speed of the rim of the flywheel My answer for (a) is 104.7 secs, ...
January 21, 2007 by Jim (BIGEYE)

Physics
A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. On bringing in his arms, the angular speed increases to 7.50 rad/s. By what factor does the moment of inertia change?
November 4, 2013 by Mikhail

Angular Speed-Physics
Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. What happens to the angular speed of a star as it shrinks? Explain.
November 1, 2012 by Kaitlyn

principles of physics
When a skater brings her arms in when spinning, she increases her ____________________. A) angular speed.B) Both of these.C) Neither of these.D) angular momentum.
March 2, 2012 by CHRIS

Physics
A non-rotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. Assuming no external torques, what is the final common angular speed of the two disks?
April 21, 2010 by Aja

Physics
Two astronauts, each having a mass M are connected by a length of rope of length d have a negligible mass. They are isolated in space, orbiting their center of mass at an angular speed of ý0. By pulling on the rope, one of the astronauts shortens the total distance between ...
November 14, 2012 by Alphonse

Physics
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 centripetal accelerations of a given point on a fan blade? Centripetal acceleration at a distance R and angular speed w is a = R w^2. The ratio of the ...
March 15, 2007 by CJ

PHYSICS--SHM
PLZ HELP. THANKS. The balance wheel of a watch oscillates with an angular amplitude of rad and a period of 0.220 s. a) Find the maximum angular speed of the wheel. (b) Find the angular speed of the wheel when its displacement is /4 rad. (c) Find the magnitude of the angular ...
January 27, 2007 by wooh

HS Physics
Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.10 10-3 rad/s, while the other has an angular speed of 3.90 10-3 rad/s. How long will it be before they meet? I can NOT figure it out. I got 20 and ...
October 25, 2010 by Sarah

physics
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 of 0.29 rad/s 2 . Find the angle through which the part rotates before reaching this final speed. Answer in units of rad
December 13, 2012 by Anonymous

physics
A centrifuge takes 1 minute to turn through 20 complete revolutions before reaching it's final speed. What is the angular acceleration (assumed constant) and what was it's final angular speed in rpm? How do I solve this without knowing the radius of the centrifuge?
March 25, 2011 by Mark

Physics
A cylinder with a diameter of 16 rolls with an angular speed of 0.055 on a level surface. If the cylinder experiences a uniform tangential acceleration of 0.020 without slipping until its angular speed is 1.0 , through how many complete revolutions does the cylinder rotate ...
June 18, 2013 by Anonymous

physics
A 12 g CD with a radius of 6.0 cm rotates with an angular speed of 40 rad/s. What is its kinetic energy? What angular speed must the CD have if its kinetic energy is to be doubled?
October 17, 2009 by angel

physics
What is the angular momentum (in kilogram-meter^2/second) of a 500.0 g ball rotating on the end of a string in a circle of radius 1.54 m at an angular speed of 2.50 rad/s?
April 25, 2013 by BG

physics
What is the angular momentum (in kilogram-meter^2/second) of a 500.0 g ball rotating on the end of a string in a circle of radius 1.45 m at an angular speed of 1.50 rad/s?
April 26, 2013 by Nicole

Physics 101
What is the angular momentum of a 0.705kg ball rotating on the end of a thin string in a circle of radius 0.800m at an angular speed of 12.8rad/s ?
October 25, 2013 by mary

physics
Two persons start at the same place and walk around a circular lake in opposite directions. One has an angular speed of (1.40 x 10^-3) rad/sec. The other has an angular speed of (3.70 x 10^-3) rad/sec. How long (how much time) will it be before they meet?
October 12, 2009 by Bill

physics
A remote-controlled carís wheel accelerates at 22.7 rad/s. If the wheel begins with an angular speed of 11.0 rad/s, what is the wheelís angular speed after exactly twenty full turns?
November 13, 2012 by Alyssa

physics
A remote-controlled carís wheel accelerates at 22.7 rad/s. If the wheel begins with an angular speed of 11.0 rad/s, what is the wheelís angular speed after exactly twenty full turns?
November 13, 2012 by Alyssa

physics
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 wheel's angular speed after exactly 3 full turns?
February 12, 2009 by luke

physics
If the CD rotates clockwise (let's take clockwise rotation as positive) at 500 (revolutions per minute) while the last song is playing, and then spins down to zero angular speed in 2.60 with constant angular acceleration, what is , the angular acceleration of the CD, as it ...
October 24, 2012 by Anonymous

PHYSICS help!!!!! =)
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 angular speed of precession of the angular velocity of the object? A.1.33 rad/s. B.0.750 rad/s. C.12.0 rad/s. D.zero. E.It depends on the moment of ...
November 13, 2012 by Elyse

math
ANGULAR SPEED OF A RACE CAR. A race car is driven around a circular track at a constant speed of 180miles per hour. If the diameter of the track is 1/2mile, what is the angular speed of the car? Express your answer in revolutions per hour(which is equivalent to laps per hour) ...
June 13, 2007 by michelle

physics
The speed of a moving bullet can be determined by allowing the bullet to pass through two rotating paper disks mounted a distance d apart on the same axle (Fig. below). From the angular displacement of the two bullet holes in the disks and the rotational speed of the disks, we...
May 18, 2013 by Anonymous

AP Physics
A flywheel turns through 46 rev as it slows from an angular speed of 3.1 rad/s to a stop. Assuming a constant angular acceleration, find the time for it to come to rest? What is its angular acceleration (in rad/s^2) ? How much time is required for it to complete the first 23 ...
January 27, 2008 by ed

physics
A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.029 rad/s2. How long does it take the wheel to come up to operating speed?
November 15, 2010 by michelle

physics
A Ferris wheel rotates at an angular velocity of 0.28 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.021 rad/s2. How long does it take the wheel to come up to operating speed?
July 16, 2013 by gregory

Physics Classical Mechanics
A metal meter stick made of steel rotates about its midpoint. The angular speed is slowly increased. At what value of the angular speed will the stick break apart at the center? Give your answer in rad/s. Hint: find a relationshop between the maximum angular frequency and the ...
November 27, 2013 by Anonymous

Physics
an automobile tire has a radius of 0.350M, and its center forward with a liner speed of v=13.0m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) (b) Relative to the axle, what is the ...
March 14, 2007 by CJ

physics
A cylinder with a diameter of 23 cm rolls with an angular speed of 0.30 rad/s on a level surface. If the cylinder experiences a uniform tangential acceleration of 0.022 m/s2 without slipping until its angular speed is 1.01 rad/s, through how many complete revolutions does the ...
December 11, 2010 by Renee

physics
A spinning disk of mass 5.0 kg and radius 0.25m is rotating about an axis through its center at 400 rev/min. a.) What is the angular velocity of the disk in rad/s? b.) What is the moment of inertia of the disk? c.) If it accelerates at a constant rate to 800 rev/min in 8 sec, ...
July 29, 2012 by Lauren

Physics
A spinning disk of mass 5.0 kg and radius 0.25m is rotating about an axis through its center at 400 rev/min. a.) What is the angular velocity of the disk in rad/s? b.) What is the moment of inertia of the disk? c.) If it accelerates at a constant rate to 800 rev/min in 8 sec, ...
July 29, 2012 by Lauren

physics
A small ball with a mass of 0.05 kg moves along a circular orbit with a radius of 0.9 m at a speed of 9.0 m/s. What is the angular momentum of the ball? If the angular momentum of this ball were quantized in the same manner as the angular momentum of electrons in the Bohr ...
April 22, 2014 by Anonymous

ap phyiscs
A bowler throws a bowling ball of radius R=11 cm down a lane. The ball slides on the lane, with initial speed v(of the center of mass)=7 m/s and initial angular speed =0. The coefficient of kinetic friction between the ball and the lane is .25. The kinectic frictional force fk...
February 10, 2008 by kristen

college physics
A diver begins a high dive with an angular velocity of 6.3 rad/s. By tucking himself into a ball, he decreases his moment of inertia by a factor of 9.0. What is his new angular speed?
September 12, 2010 by Angela

physics
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 reaching its final angular speed. Calculate its angular acceleration.
March 14, 2011 by Emily

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members