NEET · Physics · STD 11 - 6. system of particles and rotational motion
The angular speed of the wheel of a vehicle is increased from \(360 \;rpm\) to \(1200 \;rpm\) in \(14 \;second\). Its angular acceleration is,
- A \(1 \;rad / s ^{2}\)
- B \(2 \pi \;rad / s ^{2}\)
- C \(28 \pi \;rad / s ^{2}\)
- D \(120 \pi \;rad / s ^{2}\)
Answer & Solution
Correct Answer
(B) \(2 \pi \;rad / s ^{2}\)
Step-by-step Solution
Detailed explanation
\(\omega_{0}=360 rpm =360 \times \frac{2 \pi}{60}=12 \pi rad / s\) \(\omega=1200 rpm =1200 \times \frac{2 \pi}{60}=40 n rad / s\)
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
- \(10\) resistors, each of resistance \(R\) are connected in series to a battery of \(emf\) \(E\) and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased \(n\) times. The value of \(n\) is :NEET 2023 Medium
- A uniform conducting wire of length \(12 \mathrm{a}\) and resistance \('R'\) is wound up as a current carrying coil in the shape of, \((i)\) an equilateral triangle of side \('a'.\) \((ii)\) a square of side \('a'.\) The magnetic dipole moments of the coil in each case respectively are:NEET 2021 Medium
- In some appropriate units, time \((t)\) and position \((x)\) relation of a moving particle is given by \(t=x^2+x\). The acceleration of the particle isNEET 2025 Hard
- A ball of mass \(0.15\, \mathrm{~kg}\) is dropped from a height \(10\, \mathrm{~m}\), strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is \(\left(\mathrm{g}=10 \,\mathrm{~m} / \mathrm{s}^{2}\right)\) nearly : (In \(\mathrm{kg}\, \mathrm{m} / \mathrm{s}\))NEET 2021 Medium
- At ..... \(km\) height from the surface of earth the gravitation potential and the value of \(g\) are \(-5.4 \times 10^7\, J kg^{-1}\) and \(6.0\,m s^{-2}\) respectively . Take the radius of earth as \(6400\, km\).NEET 2016 Medium
- A light beam is incident on a denser medium whose refractive index is \(1.414\) at an angle of incidence \(45^o\) . Find the ratio of width of refracted beam in a medium to the width of the incident beam in airNEET 2017 Medium
More PYQs from NEET
- A selectable marker is used toNEET 2019 Medium
- Regarding Meiosis, which of the statements is incorrect?NEET 2022 Medium
- \(2\left( C _{51} H _{98} O _6\right)+145 O _2 \rightarrow 102 CO _2+98 H _2 O +\) energy
The Respiratory Quotient (RQ) of a biomolecule, used for respiration, as per the above equation would be :NEET 2026 Hard - Match the coordination number and type of hybridisation with distribution of hybrid orbitals in space based on Valence bond theory.
Select the correct optionCoordination number and type of hybridisation Distribution of hybrid orbitals In space \((a)\) \(4, sp ^{3}\) \((i)\) trigonal bipyramidal \((b)\) \(4, dsp ^{2}\) \((ii)\) octahedral \((c)\) \(5, sp ^{3} d\) \((iii)\) tetrahedral \((d)\) \(6, d ^{2} sp ^{3}\) \((iv)\) square planar NEET 2020 Medium - The capacity to generate a whole plant from any cell of the plant is called:NEET 2024 Medium
- A wire of length \(L\) metre carrying a current of \(I\) ampere is bent in the form of circle. Its magnetic moment isNEET 2020 Medium