physics
posted by Anonymous .
A spinning flywheel has rotational inertia I = 402.9 kgm2. Its angular velocity decreases from 20.3 rad/s to zero in 266.6 s due to friction. What is the frictional torque acting?
Torque= MomentofInertia*angularacceleration.
You are given the moment of inertia (you named it rotational inertia). Angular acceleration is (20.3/266.3) rad/sec^2
Solve for torque.
Respond to this Question
Similar Questions

Physics  Rotational Mechanics
The combination of an applied force and a constant frictional force produces a constant total torque of 35.8 Nm on a wheel rotating about a fixed axis. The applied force acts for 5.95 s. During this time the angular speed of the wheel … 
Physics
I need help with this problem. A ceiling fan is turned on and a net torque of 2.0 Nm is applied to the blades. The blades have a total moment of inertia of 0.24 kgm2. What is the angular acceleration of the blades in rad/s2? 
physics
A diver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. He then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. The net external torque acting on the … 
physics
A spinning flywheel has rotational inertia I = 401.9 kg · m2. Its angular velocity decreases from 20.5 rad/s to zero in 257.1 s due to friction. What is the frictional torque acting? 
Physics
A spinning flywheel has a rotational inertia I=400.0 kg metre squared.Its angular velocitydecreases from 20.0rad/secondsto zero in 300.0 seconds due to friction.What is the frictional torque acting? 
Physics
A spinning flywheel has a rotational inertia I=400.0 kg metre squared.Its angular velocitydecreases from 20.0rad/secondsto zero in 300.0 seconds due to friction.What is the frictional torque acting? 
Physics
A spinning flywheel has a rotational inertia I=400.0 kg metre squared.Its angular velocitydecreases from 20.0rad/secondsto zero in 300.0 seconds due to friction.What is the frictional torque acting? 
Physics
A spinning flywheel has a rotational inertia I=400.0 kg metre squared.Its angular velocitydecreases from 20.0rad/secondsto zero in 300.0 seconds due to friction.What is the frictional torque acting? 
Physics
. (a) Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.400 kg ⋅ m2. (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment … 
Physics
A wheel of moment of inertia 0.136 kg · m2 is spinning with an angular speed of 5000 rad/s. A torque is applied about an axis perpendicular to the spin axis. If the applied torque has a magnitude of 67.8 N · m, the angular velocity …