Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS 201826 May
Exam
AIIMS
Year
2018
Date
26 May
Subject
Physics
Chapter
Center of Mass, Momentum and Collision

AIIMS 2018 · 26 May · Physics · Center of Mass, Momentum and Collision

What will be the position of centre of mass of a half disc of...

What will be the position of centre of mass of a half disc of uniform mass density as shown What will be the position of centre of mass of a half disc of uniform mass density as shown

Options

  1. A2aπ\frac{2 a}{\pi}
  2. B4a3π\frac{4 a}{3 \pi}
  3. Caπ\frac{a}{\pi}
  4. D2a3π\frac{2 a}{3 \pi}

Correct answer

B. 4a3π\frac{4 a}{3 \pi}

Step-by-step solution

Fact that C.O.M. of half disc is at distance of 4a3π\frac{4 a}{3 \pi} from centre.
Practice Center of Mass, Momentum and Collision on Quantrex Academy →

More from Center of Mass, Momentum and Collision

A frictionless circular wire of unit radius is fixed on the horizontal plane. Two point… NEET 2026Bob B of mass m at rest is hanging vertically from the ceiling via a massless string of… NEET 2026A ball of mass 0.5 kg is dropped from a height of 40 m . The ball hits the ground and… NEET 2025Two bodies A and B of same mass undergo completely inelastic one dimensional collision.… NEET 2024Two particles A and B initially at rest, move towards each other under mutual force of… NEET 2023A 1 ~kg object strikes a wall with velocity 1 ~ms^ -1 at an angle of 60^ ∘ with the wall… NEET 2023A bullet of mass m hits a block of mass M elastically. The transfer of energy is the… NEET 2023A shell of mass m is at rest initially. It explodes into three fragments having mass in… NEET 2022 Full Center of Mass, Momentum and Collision list All NEET PYQs