JEE Mains · Physics · STD 11 - 6. system of particles and rotational motion
A cubical block of side \(30\,cm\) is moving with velocity \(2\,\,ms^{-1}\) on a smooth horizontal surface. The surface has a bump at a point \(O\) as shown in figure. The angular velocity (in rad/s) of the block immediately after it hits the bump, is

- A \(13.3\)
- B \(5.0\)
- C \(9.4\)
- D \(6.7\)
Answer & Solution
Correct Answer
(B) \(5.0\)
Step-by-step Solution
Detailed explanation
Angular momentum, \(mvr = I\omega \) momrnt of Inertia \((I)\) of cubical block is given by…
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
- Two waves executing simple harmonic motion travelling in the same direction with same amplitude and frequency are superimposed. The resultant amplitude is equal to the \(\sqrt{3}\) times of amplitude of individual motions. The phase difference between the two motions is \(.....(degree)\)JEE Mains 2022 Medium
- Two \(4\) bits binary numbers, \(A = 1101\) and \(B = 1010\) are given in the inputs of a logic circuit shown in figure below. The output \((Y)\) will be:
JEE Mains 2026 Medium - In an experiment to measure focal length \((f)\) of convex lens, the least counts of the measuring scales for the position of object \((u)\) and for the position of image \((v)\) are \(\Delta u\) and \(\Delta v\), respectively. The error in the measurement of the focal length of the convex lens will be _______.JEE Mains 2024 Hard
- Match the LIST-I with LIST-II
Choose the correct answer from the options given below:LIST-I LIST-II A. Pressure varies inversely with volume of an ideal gas I. Adiabatic process B. Heat absorbed goes partly to increase internal energy and partly to do work II. Isochoric process C. Heat is neither absorbed nor released by a system III. Isothermal process D. No work is done on or by a gas IV. Isobaric process JEE Mains 2025 Easy - The root mean square velocity of molecules of gas isJEE Mains 2023 Easy
- Two equal positive point charges are separated by a distance \(2 a\). The distance of a point from the centre of the line joining two charges on the equatorial line (perpendicular bisector) at which force experienced by a test charge \(q_0\) becomes maximum is \(\frac{a}{\sqrt{x}}\). The value of \(x\) is \(................\)JEE Mains 2023 Hard
More PYQs from JEE Mains
- A parallel plate capacitor has plate area \(40\,cm ^2\) and plates separation \(2\,mm\). The space between the plates is filled with a dielectric medium of a thickness \(1\,mm\) and dielectric constant \(5\) . The capacitance of the system is :JEE Mains 2023 Medium
- The increase in pressure required to decrease the volume of a water sample by \(0.2 \%\) is \(\mathrm{P} \times 10^5 \mathrm{Nm}^{-2}\). Bulk modulus of water is \(2.15 \times 10^9 \mathrm{Nm}^{-2}\). The value of P is ________.JEE Mains 2025 Medium
- Two carnot engines \(A\) and \(B\) operate in series such that engine \(A\) absorbs heat at \(T_{1}\) and rejects heat to a sink at temperature \(T\). Engine \(B\) absorbs half of the heat rejected by engine \(A\) and rejects heat to the sink at \({T}_{3}\). When workdone in both the cases is equal, the value of \({T}\) isJEE Mains 2021 Hard
- In a building there are \(15\) bulbs of \(45\; \mathrm{W}, 15\) bulbs of \(100\; \mathrm{W}, 15\) small fans of \(10 \;\mathrm{W}\) and \(2\) heaters of \(1 \;\mathrm{kW}\). The voltage of electric main is \(220\; \mathrm{V}\). The minimum fuse capacity (rated value) of the building will be: .......... \(A\)JEE Mains 2020 Medium
- Let \(S_{n}\) denote the sum of first \(n\)-terms of an arithmetic progression. If \(S_{10}=530, S_{5}=140\), then \(\mathrm{S}_{20}-\mathrm{S}_{6}\) is equal to :JEE Mains 2021 Medium
- A galvanometer has a \(50\) \(division\) scale. Battery has no internal resistance. It is found that there is deflection of \(40\) \(divisions\) when \(R = 2400\,\Omega \). Deflection becomes \(20\) \(divisions\) when resistance taken from resistance box is \(4900\,\Omega \) . Then we can conclude
JEE Mains 2016 Hard