A wheel rotating at 50 rad/s decelerates uniformly to rest in 10 s. Total angular displacement:
A500 rad
B250 rad
C1000 rad
D100 rad
Answer & Solution
Correct answer: B. 250 rad
Using omega² = omega0² + 2 alpha theta or theta = (omega0 + omega)/2 × t = (50 + 0)/2 × 10 = 250 rad. The average angular velocity is 25 rad/s for 10 s, giving 250 rad.
Related questions
The branch describing the motion of a rotating rigid body about a fixed axis is rotationalSix washers on a light rod illustrate the moment of inertia of a system of:The more massive an object is, the more of this it has in linear motion:Unlike linear position measured in metres, angular position is measured in units that are:Acceleration caused by the change in direction of tangential velocity is called:Several torques acting about one axis are combined by finding their:The perpendicular distance from the axis to the line of the force is called the:The SI unit of torque is the newton multiplied by the: