Q. The ratio of the accelerations for a solid sphere (mass 'm' and radius 'R') rolling down an incline of angle 'θ' without slipping and slipping down the incline without rolling is :
A) 5 : 7
B) 2 : 3
C) 2 : 5
D) 7 : 5
Explanation
[Solution] Rolling: $a = \frac{g\sin\theta}{1 + 2/5} = \frac{5}{7}g\sin\theta$; slipping: $g\sin\theta$. Ratio 5 : 7. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.