NEETPhysicsRotational Motion
Assertion A ring and a disc of same mass and radius begin to roll without slipping from the top of an inclined surface at (t=0 ). The ring reaches the bottom of incline in time (r₁ ) while the disc reaches the bottom in time (r₂ ), then (t₁ < t₂ ). Reason Disc will roll down the plane with more acceleration, because of its lesser value of moment of inertia.
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true and (R) is NOT the correct explanation of (( A ) ).
- C(A) is true but (R) is false.
- DBoth (A) and (R) are false.
Correct answer
D. Both (A) and (R) are false.
Step-by-step solution
(a= g 1+ I m R^2 ) Disc have lesser value of Inertia therefore have more acceleration.