MHT CET · Physics · Center of Mass Momentum and Collision
Three rods of same mass are placed as shown in figure. The co-ordinates of centre of mass of the system are
- A \(\left(\frac{a}{3}, \frac{a}{3}\right)\)
- B \(\left(a, \frac{a}{2}\right)\)
- C \(\left(2 a, \frac{a}{2}\right)\)
- D \(\left(\frac{2 a}{3}, \frac{a}{3}\right)\)
Answer & Solution
Correct Answer
(D) \(\left(\frac{2 a}{3}, \frac{a}{3}\right)\)
Step-by-step Solution
Detailed explanation
\( (0,\tfrac{a}{2}),\quad (a,0),\quad (a,\tfrac{a}{2}) \) \( x_{cm}=\frac{0+a+a}{3}=\frac{2a}{3} \)
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
- Same current is flowing in two different a.c. circuits. First circuit contains only inductance and second contains only capacitance. If the frequency of a.c. is increased in both circuits, the current willMHT CET 2025 Medium
- The dimensions of Planck's constant is the same as the product ofMHT CET 2010 Medium
- Two rods of same length and material are joined end to end. They transfer heat in 8 second. When they are joined in parallel they transfer same amount of heat in same conditions in timeMHT CET 2021 Medium
- A circular coil of wire consisting of 100 turns each of radius 9 cm carries a current of 0.4 A. The magnitude of the magnetic field at the centre of coil isMHT CET 2019 Medium
- Average power in the \(L-C-R\) circuit depends uponMHT CET 2010 Easy
- In a biprism experiment, the distance of the second dark fringe from the central fringe is 3 mm . The distance of the sixth bright fringe from the central fringe isMHT CET 2025 Easy
More PYQs from MHT CET
- Let the current 'I' be associated with an electron of charge 'e' moving in a circular orbit of radius ' \(r\) ' with speed ' \(v\) ' around the positively charged nucleus. The ratio \(\frac{r}{v}\) isMHT CET 2025 Medium
- In a solution, mole fraction of solute is 0.2 , when lowering in vapour pressure is 10 mm Hg . To get lowering of vapour pressure of 20 mm Hg , mole fraction of solute in solution isMHT CET 2024 Medium
- A body is rotating about its own axis. Its rotational kinetic energy is ' \(x\) ' and its angular momentum is ' \(y\) '. Hence its moment of inertia about the axis isMHT CET 2022 Medium
- The magnetic field (B) inside a long solenoid having ' n ' turns per unit length and carrying current ' \(i\) ' when iron core is kept in it, is ( \(\mu_0=\) permeability of vacuum, \(\chi=\) magnetic susceptibility)MHT CET 2025 Easy
- Which one of the following is NOT a psychological disorder?MHT CET 2021 Hard
- Identify the product of following reaction. Benzoyl chloride \(\stackrel{\mathrm{H}_2 \mathrm{O}}{\longrightarrow}\) productMHT CET 2023 Easy