Physics · 2011
NEET 2011 · Prelims · Code A · Q6
The instantaneous angular position of a point on a rotating wheel is given by the equation θ( t )=2 t^3-6 t^2 The torque on the wheel becomes zero at:
The instantaneous angular position of a point on a rotating wheel is given by the equation $\displaystyle \theta(\mathrm{t})=2 \mathrm{t}^3-6 \mathrm{t}^2$
The torque on the wheel becomes zero at :
Official answer
(2)
$\displaystyle \mathrm{t}=1 \mathrm{~s}$
All Systems of Particles and Rotational Motion questionsPractice Systems of Particles and Rotational Motion →
More from Systems of Particles and Rotational Motion
- Three objects, A: (a solid sphere), B: (a thin circular disk) and C: (a circular ring), each have the same mass M and radius R. They all spin with…2018
- A light rod of length l has two masses m_1 and m_2 attached to its two ends. The moment of inertia of the system about an axis perpendicular to the…2016
- A force F=α i+3 j+6 k is acting at a point r=2 i-6 j-12 k. The value of α for which angular momentum about origin is conserved is:2015
- A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping its mass same. Which of the…2018
- The angular speed of a fly wheel moving with uniform angular acceleration changes from 1200 rpm to 3120 rpm in 16 seconds. The angular acceleration…2022
- A thin wire of length 'L' and linear mass density 'm' is bent into a circular ring (in x-y plane) with centre 'C' as shown in figure. The moment of…2026
- A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere B of radius r<R and mass m<M. Assume that the line joining…2026
- A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a…2017
NEET (UG) 2011 Physics question, with the answer from NTA’s final answer key. Where our answers come from.