Question
The radius of gyration of a solid sphere of mass 5 kg about X Y is 5 m as shown in figure. The radius of the sphere is 5 x 7 ~m , then the value of x is:
NEET
Physics
Rotational Motion
2024
NEET 2024 (Re-NEET)
NEET Physics Question (2024) — Solution
Options
- A. 5
- B. 2
- C. 2
- D. 5
Answer
D. 5
Step-by-step solution
I_ X Y =I_ C M +M R^2= 2 5 M R^2+M R^2= 7 5 M R^2= 7 5 5 R^2=7 R^2...(1) I_ X Y =M K^2=5 5^2...(ii) 5 5^2=7 R^2 [ From (1) and (2)] R= 5 7 5= 5 x 7 (Given) x= 5
Related: Physics — Rotational Motion · All PYQ Banks