Q. 34.8( 4 Votes )

A car moves at a constant speed on a road as shown in figure below the normal force by the road on the car is NA and N9 when it is at the points A and B respectively.



A. NA = NB

B. NA > NB

C. NA < NB

D. insufficient information to decide the relation of NA and NB.

Answer :

Both A and B are on the crest of curves where car weight mg is acting perpendicular to the surface. But due to the car

motion on the curve there will be reduction in its weight equal to , m being mass of car, v velocity of car and r is radius of curve. This reduction is inversely proportional to r. so, smaller the r greater is the value of . Now from the diagram we see A r at point A is smaller than point B. Hence, normal forces at these points will be equal to the apparent weight at these points.


So, NA < NB.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Circular Motion DynamicsCircular Motion DynamicsCircular Motion Dynamics56 mins
Vetical Circular MotionVetical Circular MotionVetical Circular Motion52 mins
Circular Motion | Get the BasicsCircular Motion | Get the BasicsCircular Motion | Get the Basics44 mins
Goprep Genius Quiz | Circular MotionGoprep Genius Quiz | Circular MotionGoprep Genius Quiz | Circular Motion39 mins
Circular Motion | Understanding the revoloving bodyCircular Motion | Understanding the revoloving bodyCircular Motion | Understanding the revoloving body53 mins
Complete Chapter Revision | Circular MotionComplete Chapter Revision | Circular MotionComplete Chapter Revision | Circular MotionFREE Class
Uniform circular motion and centripetal force - Understanding a revolving bodyUniform circular motion and centripetal force - Understanding a revolving bodyUniform circular motion and centripetal force - Understanding a revolving body53 mins
Circular permutationsCircular permutationsCircular permutations61 mins
Interactive Quiz on Circular permutationsInteractive Quiz on Circular permutationsInteractive Quiz on Circular permutations50 mins
Projectile MotionProjectile MotionProjectile Motion41 mins
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
caricature
view all courses
RELATED QUESTIONS :