Q. 23.9( 10 Votes )

A metre scale is

Answer :

question, a metre scale is moving with uniform velocity that means velocity of meter scale is constant also we know change in constant quantity is zero so rate of change of velocity (i.e. acceleration) will also be zero.

Now from Newton’s 2nd law i.e. net but we have a(acceleration) is zero i.e. , so . net

Net force on metre scale must be zero so from our options (c) & (d) are absolutely wrong.

Now torque is the cross product of position vector and force vector also we have force vector in this case is zero i.e. net

And torque is so putting force vector value

hence from here it is obvious that options (a) is wrong.

Therefore, option (b) is correct.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

Figure <span langPhysics - Exemplar

Figure <span langPhysics - Exemplar

Two uniform solidHC Verma - Concepts of Physics Part 1

A block of known HC Verma - Concepts of Physics Part 1