TS EAMCET · Physics · Center of Mass Momentum and Collision
A ball of mass moving along -direction collides elastically with a stationary ball of mass . The first ball (mass ) recoils at right angle to its original direction of motion. If the second ball starts moving at an angle with the -axis, the value of must be
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
The given data can be diagrammatically represented as below, According to the conservation of linear momentum,(1) u=mv2cos30°...1 (∴ Along x- direction)2v1=mv2sin30°...2 (∴therefore Along y- direction)=mv2=2v1On solving 1and 2u=3v1Given, the collision is…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A bucket filled with water is tied to a rope of length \(0.5 \mathrm{~m}\) and is rotated in a circular path in vertical plane. The least velocity it should have at the lowest point of circle so that water does not spill is, \(\left(g=10 \mathrm{~ms}^{-2}\right)\)TS EAMCET 2007 Easy
- A mass \(M \mathrm{~kg}\) is suspended by a weightless string. The horizontal force required to hold the mass at \(60^{\circ}\) with the vertical isTS EAMCET 2014 Easy
- Consider the following two statements, \(A\) and \(B\) and identify the correct answer given below: A. Nuclear density is same for all nuclei B. Radius of the nucleus \(R\) and its mass number \(A\) are related as \(\sqrt{A} \propto R^{1 / 6}\).TS EAMCET 2004 Easy
- The angle between force \(\vec{F}=3 \hat{i}+4 \hat{j}-5 \hat{k}\) and displacement \(\vec{d}=5 \hat{i}+4 \hat{j}+3 \hat{k}\) isTS EAMCET 2023 Medium
- If a bar magnet of moment \(10^{-4} \mathrm{Am}^2\) is kept in a uniform magnetic field of \(12 \times 10^{-3} \mathrm{~T}\) such that it makes an angle of \(30^{\circ}\) with the direction of magnetic field, then the torque acting on the magnet isTS EAMCET 2024 Easy
- The number of significant figures in \(3.78 \times 10^{22} \mathrm{~kg}\) isTS EAMCET 2023 Easy
More PYQs from TS EAMCET
- The long range force experienced by a neutral particle with a finite massTS EAMCET 2020 Easy
- How much thermal energy is required to change a \(40 \mathrm{~g}\) ice cube from solid at \(-10^{\circ} \mathrm{C}\) to steam at \(110^{\circ} \mathrm{C}\) ? [Assume, latent heat of fusion for water \(=80 \mathrm{kcal} / \mathrm{kg}\), specific heat of water \(=1 \mathrm{kcal} / \mathrm{kg}^{\circ} \mathrm{C}\), specific heat of ice \(=0.5 \mathrm{kcal} / \mathrm{kg}^{\circ} \mathrm{C}\), specific heat of steam \(=0.48 \mathrm{kcal} / \mathrm{kg}^{\circ} \mathrm{C}\), latent heat of vaporisation of water \(\left.=540 \mathrm{kcal} / \mathrm{kg}^{\circ} \mathrm{C}\right]\)TS EAMCET 2020 Easy
- The phase difference between the following two waves and is:TS EAMCET 2020 Medium
- A very long wire carrying a current \(4 \sqrt{2} \mathrm{~A}\) is bent at a right angles. The magnitude of magnetic field ( \(|\mathbf{B}|)\) at a point \(P\) lying on a line perpendicular to the bent wire at a distance, \(d=20 \mathrm{~cm}\) from the point of the bending will be (Let \(\mu_0=4 \pi \times 10^{-7} \mathrm{H} / \mathrm{m}\) )
TS EAMCET 2019 Medium - The law not described by any four of the Maxwell's equations isTS EAMCET 2018 Easy
- A block of mass ' \(m\) ' with an initial kinetic energy ' \(E\) moves up an inclined plane of inclination ' \(\theta\) '. If ' \(\mu\) ' is the coefficient of friction between the plane and the body, the work done against friction before coming to rest isTS EAMCET 2024 Medium