physics

A turntable turning at rotational speed 21rpm stops in 50s when turned off. The turntable's rotational inertia is 1.2×10−2kg⋅m2.

a)Determine the magnitude of the resistive torque that slows the turntable.

  1. 👍 0
  2. 👎 0
  3. 👁 451

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    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 kg⋅m2 and walks out to the edge. The merry-go-round has a rotational speed of 0.20 s−1 when she is at

    asked by Jordann on April 4, 2016
  2. Physics

    A 21.0-g metal cylinder is placed on a turntable, with its center 90 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is ìs = 0.84. A thin, massless string of

    asked by mymi on October 20, 2011
  3. Physics

    A large turntable rotates about a fixed vertical axis, making one revolution in 6.00 s. The moment of inertia of the turntable about this axis is 1200 kg * mg^2. A childe of mass 40.0 kg, initually staning at the center of the

    asked by Sarah on June 25, 2009
  4. Physics

    A small metal cylinder rests on a circular turntable that is rotating at a constant speed. The small metal cylinder has a mass of 0.20kg, the coefficient of static friction between the cylinder and the turntable is 0.080, and the

    asked by Tiffany on September 28, 2009
  5. Physics

    A 5.0 g coin is placed 15 cm from the center of the turntable. THe coin has static and kinetic coefficients of friction with the turntable surface of us=.8 and uk=.5. THe turntable very slowly speeds up to 60 rpm. Does the coin

    asked by Sarah on June 16, 2010
  1. physics

    A coin is placed 14.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 31.0 rpm (revolutions per minute) is

    asked by mitchell on January 17, 2017
  2. physics

    A small cylinder rests on a circular turntable that is rotating clockwise at a constant speed. The cylinder is at a distance of r = 12 cm from the center of the turntable. The coefficient of static friction between the bottom of

    asked by tom on July 10, 2013
  3. physics

    A coin rests 15.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.390. The turntable starts from rest at t = 0 and rotates with a constant angular acceleration of

    asked by Anonymous on November 4, 2012
  4. physics

    A trapeze artist sailing through the air rotates with a rotational speed of 0.9·rev/s. If she contracts to reduce her rotational inertia to one sixth of what it was, what will her new rotational speed be? _____ rev/s? Can she

    asked by wally on February 6, 2013
  5. College Physics

    A turntable reaches an angular speed of 33.3 rpm, in 2.0 s, starting from rest. (a) Assuming the angular acceleration is constant, what is its magnitude? (b) How many revolutions does the turntable make during this time interval?

    asked by Megan on September 25, 2009
  6. mechanics

    A turntable rotating at 78 rev/min slow down and stops in 32 second after the motor is turned off. a) Find its angular acceleration in rev/min^2. b)how many revolutions does it make in this this time

    asked by anaya on February 22, 2016

You can view more similar questions or ask a new question.