1. Tardigrade
  2. Question
  3. Physics
  4. A thin rod AB is moving in a vertical plane. At a certain instant when the rod is inclined at 60° to the horizontal the point A is moving horizontally with 3 m / s while B is moving in the vertical direction. Then velocity of B is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A thin rod $AB$ is moving in a vertical plane. At a certain instant when the rod is inclined at $60^{\circ}$ to the horizontal the point $A$ is moving horizontally with $3\, m / s$ while $B$ is moving in the vertical direction. Then velocity of $B$ isPhysics Question Image

System of Particles and Rotational Motion

Solution:

image
along the riged rod comporent of vertical will be same
$3 \cos 60^{\circ}= V _{ B } \cos 30^{\circ}$
$V _{ B }=\frac{3 x }{2} \times \frac{2}{\sqrt{3}}=\sqrt{3}$