Physics - Rotation Question with Solution | TestHub

PhysicsRotationRotational KinematicsMedium2 minQB

PhysicsMediummultiple choice

A uniform rod AB of length 7 m is undergoing general planar motion on a smooth horizontal surface such that, at some instant of time, velocities of its end point A and centre $C$ are both perpendicular to the rod and opposite in direction, having magnitude 11 $m / s$ and $3 m / s$ respectively as shown in the figure. Now consider that no external force and no external torque is acting on the rod. Then select CORRECT options, for the instant shown.

Options:(select one or more)

Answer:

A, C, D

Solution:

$ω = \frac{11 + 3}{7/2} = 4 rad / s$

So accelerations of A \& B is

$∣ a_{A} ∣ = ∣ a_{B} ∣ = ω^{2} \frac{L}{2} = 4^{2} \times \frac{7}{2} = 56 m / s^{2}$

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Rotational Kinematics

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...