W A centrifuge in a medical laboratory rotates at an angular speed of3600 rev/min. When switched off, it rotates through 50.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2 ) of the centrifuge.

A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s². At a point on the platform that is 1.26 m from the axis of rotation, what is the magnitude of the total acceleration a?

At a time of t=0 seconds the tires of a moving motorcycle are rotating with an unknown initial angular velocity, at that instant each tire starts accelerating with an angular acceleration of 3.00 rev/s2 for 5.00 seconds. Each tire turns through 50.0 revolutions in those 5.00 seconds. Assume the motorcycles tires have a radius of 36.0 cm and that the tires rotate without slipping relative to the road surface. How fast is the motorcycle traveling at t=5.0s?

A “blink of an eye” is a time interval of about 150 ms for an average adult. The “closure” portion of the blink takes only about 55 ms. Let us model the closure of the upper eyelid as uniform angular acceleration through an angular displacement of 14.0°. What is the tangential acceleration of the edge of the eyelid while closing if the radius of the eyeball is 1.25 cm?

A monkey has a 50 cm long tail swinging through circular arcs.  a. The moneky prepares to swing through a semicircular arc by grabbing a branch 50 cm in front.What is the angular acceleration as she begin to drop? b. What is the monkeys linear speed at the bottom of this arc, 50 sm below starting point? What is her angular speed? c. The monkey has a mass of 10 kg. What is the tension in her tail at the bottom of the arc?

Nilo.p A baseball bat is swung with an angular velocity of 500°/s and has a radius of 1.2m. What is the linear velocity of the baseball bat?

A strap, rod, or something comparable is used to spin up the disc.  I imagine someone hand-starting a lawnmower. If he pulls the strap with a final speed before pulling the strap away, what is the rotation rate of the disk, ω in rev/s?  The moment of inertia of a disc is 1/2MR2.  There's no sliding. Strap's final speed = v = 0.99 m/s. The disc's radius is R = 0.3 m The disc's mass is M = 0.8 kg

An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad/s). If a particular disk is spun at 910.0 rad/s while it is being read, and then is allowed to come to rest over 0.301 seconds, what is the magnitude of the average angular acceleration of the disk? rad average angular acceleration: s2 If the disk is 0.12 m in diameter, what is the magnitude of the tangential acceleration of a point 1/8 of the way out from the center of the disk? m tangential acceleration:

At its lowest setting a centrifuge rotates with an angular speed of ω1 = 350 rad/s. When it is switched to the next higher setting it takes t = 12.5 s to uniformly accelerate to its final angular speed ω2 = 750 rad/s.  a. Calculate the angular acceleration of the centrifuge a1 in rad/s2 over the time interval t b. Calculate the total angular displacement (in radians) of the centrifuge, Δθ, as it accelerates from the intial to the final speed.

A child sits on a merry-go-round that has a diameter of 4.00 m. The child uses her legs to push the merry-go-round, making it go from rest to an angular speed of 17.0 rpm in a time of 43.0 s. What is the average angular acceleration aavg of the merry-go-round in units of radians per second squared (rad/s?)? davg = rad/s2 What is the angular displacement Að of the merry-go-round, in units of radians (rad), during the time the child pushes the merry-go-round? A0 = rad about us careers privacy policy terms of use contact us help tv MacBook Air II F8 F10 D00 000 CA F9 F7