COMEDK · Physics · 7. Center of Mass Momentum and Collision
Select the correct statement from the following: The position of the centre of mass of a system:
- A Does not depend on the shape and size of the system
- B Depend on the choice of coordinates
- C Depends on the distribution of its mass.
- D Remains the same in any translatory motion
Answer & Solution
Correct Answer
(C) Depends on the distribution of its mass.
Step-by-step Solution
Detailed explanation
The position of the centre of mass of a system of particles is defined by the vector \(\vec{R}_{cm} = \dfrac{\sum m_i \vec{r}_i}{\sum m_i}\). This definition shows that the location of the centre of mass is determined by the individual masses \(m_i\) and their respective…
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 bus covers the first half of the total distance 6 km at a speed ' \(u\) ' and the second half at speed of \(30 \mathrm{~km} \mathrm{~h}^{-1}\). If the average speed is \(15 \mathrm{~km} \mathrm{~h}^{-1}\) the value of ' \(u\) ' is:COMEDK 2025 Easy
- If only \(2 \%\) of the main current is to be passed through a galvanometer of resistance \(G\), then the resistance of shunt should beCOMEDK 2016 Easy
- A TV tower has a height \(72 \mathrm{~m}\). The maximum distance upto which TV transmission can be received is (Take, radius of the earth as \(\left.6.4 \times 10^6 \mathrm{~m}\right)\)COMEDK 2023 Easy
- A sample of an ideal gas is taken through the cyclic process ABCA as shown in figure below. It absorbs 60J of heat during the part AB and rejects 80 J of heat during CA . There is no heat exchanged during the process BC . A work of 40 J is done on the gas during the part BC . If the internal energy of the gas at A is 1450 J , then the work done by the gas during the part CA is:
COMEDK 2025 Easy - One surface of a lens is convex and the other is concave. If the radii of curvatures are \(R\) and \(r\) respectively, the lens will be convex ifCOMEDK 2025 Medium
- Which of the given substances \(A, B\) and \(C\) have more specific heat?
COMEDK 2024 Medium
More PYQs from COMEDK
- If \(A=\left[\begin{array}{lll}2 & 1 & 3 \\ 3 & 1 & 2 \\ 1 & 2 & 3\end{array}\right]\) and I is an identity by matrix of order \(3 \times 3\) then \(A(\operatorname{adj} A)=\)COMEDK 2025 Medium
- A planet is 121 times heavier than moon and has a diameter 9 times that of moon. If the escape velocity on the planet is v , then the escape velocity on the moon will be:COMEDK 2025 Medium
- The differential coefficient is \(f(\sin x)\) with respect to \(x\) where \(f(x)+\log x\) isCOMEDK 2013 Easy
- The bond dissociation enthalpy of the species in their correct order is:COMEDK 2024 Medium
- If \(z=\left(\dfrac{\sqrt{3}}{2}+\dfrac{i}{2}\right)^5+\left(\dfrac{\sqrt{3}}{2}-\dfrac{i}{2}\right)^5\), thenCOMEDK 2025 Medium
- A magnetic field does not interact with:COMEDK 2023 Easy