A coin rests 12.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.440. The turntable starts from rest at  t = 0  and rotates with a constant angular acceleration of 0.640 rad/s2. (a) Once the turntable starts to rotate, what force causes the centripetal acceleration when the coin is stationary relative to the turntable? Under what condition does the coin begin to move relative to the turntable?   (b) After what period of time will the coin start to slip on the turntable?

Q: Human centrifuges are used to train military pilots and astronauts in preparation for high-g…

A: a) Angular speed = (88.2/4.95 )1/2                                 = 4.22 rad/s

Q: c) At this instant, find the total acceleration. inward and below the cord at ° (d) Is your answer…

A:

Q: fixed axis 0.69 m away. The mass is initially at rest and undergoes a constant angular acceleration…

A: Given: The Mass(m)= 0.39 kg. The distance (R)= 0.69 m. The angular acceleration α=4.77 rad/s2 The…

Q: One end of a cord is fixed and a small 0.250-kg object is attached to the other end, where it swings…

A: Given that           v =5.0 m/s           r =3.0 m           θ= 21 deg           m =0.250 kgThe…

Q: Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a…

A:

Q: centrifuge in a medical laboratory rotates at an angular speed of 3,750 rev/min. When switched off,…

A: Angular speed of 3,750 rev/minRotates through 46.0 revolutions before coming to restTo Find the…

Q: The angular speed of a rotor in a centrifuge increases from 426 to 1370 rad/s in a time of 5.49 s.…

A:

Q: an object of mass 0.5 kg moving in a circular path of radius 0.25 m experiences a centripetal…

A: Given value--- mass = 0.5 kg. radius = 0.25 m. centripetal acceleration = 9 m/s2.  We have to…

Q: In designing rotating space stations to provide for artificial-gravity environments, one of the…

A: In the given question, We have to determine the minimum value of radius.

Q: Human centrifuges are used to train military pilots and astronauts in preparation for high-g…

A: (a) The centripetal acceleration in terms of angular speed is given by, ac=rω2 Here, r is the radius…

Q: A solid sphere with a diameter of 0.20 m is released from rest; it then rolls without slipping down…

A: Part (A) Basic Details According to the conservation of energy, the potential energy of the sphere…

Q: (A) what is the tire treads lowest tangential speed, in meters per second, at which the nail will…

A: (a)since, nail is held in with the help of frictional force(f), hence, friction will be acting in…

Q: The differential gear of a car axle allows the wheel on the left side of a car to rotate at a…

A:

Q: As you drive down the road at 18 m/s, you press on the gas pedal and speed up with a uniform…

A:

Q: computer is reading data from a rotating CD-ROM. At a point that is 0.0314m from the center of the…

A:

Q: The angular displacement of the centrifuge is given by e - 3.2[t + 34e 0.030t - 34] rad, where t is…

A: Angular displacement Angular velocity

Q: An engine flywheel initially rotates counterclockwise at 6.83 rotations/s. Then, during 25.1 s, its…

A:

Q: A centrifuge in a medical laboratory rotates at an angular speed of 3,400 rev/min. When switched…

A: we use the basic equation of kinematics

Q: A “blink of an eye” is a time interval of about 150 ms for an average adult. The “closure” portion…

A:

Q: An object rotates about a fixed axis, and the angular position of a reference line on the object is…

A:

Q: A floppy disk rotates with a constant angular speed of 60.6 rad/s. Find the tangential speed at a…

A: See below

Q: A centrifuge in a medical laboratory rotates at an angular speed of 3,750 rev/min. When switched…

A:

Q: When a point on the rim of a 0.30-m-radius wheel experiences a centripetal acceleration of 4.0 m/s2,…

A: Given ,              Radius of rim =0.30 m                 centripetal acceleration =4.0 m/s2…

Q: When you start your record player, a ladybug is sitting on the edge of the record, 15 cm from the…

A: The angular acceleration (α) of the record is given by, Here, ω denotes the angular velocity and t…

Q: A bus is traveling at a speed of 20.0 m on a straight horizontal road. The wheels have a radius of…

A: Angular velocity,  ω=vr where, v is linear velocity. and r is radius of rotation. The linear…

Q: Human centrifuges are used to train military pilots and astronauts in preparation for high-g…

A: Given dataAcceleration (a) =9g=88.2m/s2Radius (r) =4.23m

Q: On a carnival ride, you stand next to a wall of a circular drum which spins around the center. When…

A:

Q: A centrifuge in a medical laboratory rotates at an angular speed of 3,550 rev/min. When switched…

A:

Q: A particle is moving in a circle of radius 0.40 m. At an instance when the angular speed is 2.0…

A: Given: The radius of the circular path is 0.4 m. The angular speed is 2  rad/s. The angular…

Q: You have a horizontal grindstone (a disk) that is 87 kg, has a 0.31 m radius, is turning at 94 rpm…

A:

Q: A ferris wheel with a radius of 15 meters starts from rest and achieves it's maximum tangential…

A: The expression for tangential acceleration is, atan=rα        (I)             r=radius,α=angular…

Q: A 2 m rope attaches a tire to an overhanging tree limb. A boy swinging on the tire has a tangential…

A: we know centripetal force,    Fc =mv2/r or, m = (Fc×r)÷v2 where ,m = mass of the object  v =…

Q: Riders are seated in a horizontal circle of radius 7.50 m on a carnival ride. They start from rest…

A: Given : r = 7.50 m vo = 0 because ride starts from rest dt = 21 seconds w = 1.40 rad/s

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.