Question
A rigid body rotates about a fixed axis with variable angular velocity equal to - t, at the time t, where , are constants. The angle through which it rotates before it stops is
BITSAT
Physics
Motion In Two Dimensions
2024
BITSAT 2024 (Memory Based Paper 3)
BITSAT Physics Question (2024) — Solution
Options
- A. ^2 2
- B. ^2- ^2 2
- C. ^2- ^2 2
- D. ( - ) 2
Answer
A. ^2 2
Step-by-step solution
= - t. Comparing with = _0- t Initial angular velocity = Angular'retardation = Angle rotated before it stops is ^2 2 . [using . ^2= _0^2+2 ]
Related: Physics — Motion In Two Dimensions · All PYQ Banks