Questions
A sphere is spinning about a diameter and its angular momentum is varying with time according to the graph shown in figure. If moment of inertia of the sphere is 2 Kg-m2, its maximum angular acceleration is
detailed solution
Correct option is B
Since τ=dLdt, no torque is acting on the sphere in the interval t = 2s to t = 4s and torque acting on the sphere in the interval t = 0 to t = 2s = slope of L - t graph⇒τ=82N−m=4 N−m∴ αmax=τI=42rad/s2=2 rad/s2Talk to our academic expert!
Similar Questions
A disc can rotate about an axis passing through its centre and perpendicular to the plane of the disc. Initially the disc is stationary and its moment of inertia about the axis is 4 Kg-m2. A torque is applied on the disc which varies with time according to the graph shown in figure. Then angular velocity of the disc at the end of 6th second is
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