TS EAMCET · Physics · Work Power Energy
A spherical bob of mass \(250 \mathrm{~g}\) is attached to the end of a string having length \(50 \mathrm{~cm}\). The bob is rotated on a horizontal circular path about a vertical axis. The maximum tension that the string can bear is \(72 \mathrm{~N}\). The maximum possible value of angular velocity of bob (in \(\mathrm{rad} / \mathrm{s}\) ) is
- A 18
- B 24
- C 28
- D 32
Answer & Solution
Correct Answer
(B) 24
Step-by-step Solution
Detailed explanation
We have \[ \begin{aligned} \mathrm{T}_{\max } & =\mathrm{m} \omega_{\max }^2 \mathrm{R} \\ \omega_{\max } & =\sqrt{\frac{\mathrm{T}_{\max }}{\mathrm{mR}}}=\sqrt{\frac{72}{0.25 \times 0.5}}=24 \mathrm{rad} / \mathrm{s} \end{aligned} \]
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
- Three resistances of equal values are arranged in four different configurations as shown below. Power dissipation in the increasing order is
TS EAMCET 2012 Easy - The ratio of the average translational kinetic energies of hydrogen and oxygen at the same temperature isTS EAMCET 2025 Easy
- The wavelength of a charged particle of mass \(8.0 \times 10^{-31} \mathrm{~kg}\), charge \(1.6 \times 10^{-19} \mathrm{C}\) and kinetic energy \(3 \mathrm{keV}\) will be (Planck constant, \(h=6.4 \times 10^{-34} \mathrm{Js}\) )TS EAMCET 2019 Easy
- Latent heat of vaporisation of water is . The amount of heat needed to convert of water into vapour at isTS EAMCET 2020 Easy
- Let \(v_1\) and \(v_2\) be the maximum velocities of the emitted electrons when the surface of a metal is illuminated with light waves of energy \(E_1=4 \mathrm{eV}\) and \(E_2=2.5 \mathrm{eV}\), respectively. If the work function of the metal is \(2 \mathrm{eV}\), then the ratio \(\frac{v_1}{v_2}\) isTS EAMCET 2020 Easy
- If the rate of change of electric field across the plates of a parallel plate capacitor is \(E\) and the displacement current is I, then the area of one plate of the capacitor is ( \(\varepsilon_{\mathrm{o}}\) is permittivity of free space)TS EAMCET 2025 Medium
More PYQs from TS EAMCET
- A wire, \(10 \mathrm{~m}\) long, has a resistance of \(40 \Omega\). It is connected in series with a resistance box of resistance \(R\) and a \(2 \mathrm{~V}\) storage cell. If the potential gradient along the wire is \(0.1 \mathrm{mV} / \mathrm{cm}\), then the value of \(R\) isTS EAMCET 2021 Easy
- A magnetic needle lying parallel to a magnetic field is turned through \(60^{\circ}\). The work done on it is \(W\). The torque required to maintain the magnetic needle in the position mentioned above isTS EAMCET 2012 Medium
- A body of mass \(m_1=4 \mathrm{~kg}\) moves at \(5 \hat{\mathbf{i}} \mathrm{m} / \mathrm{s}\) and another body of mass \(m_2=2 \mathrm{~kg}\) moves at \(10 \hat{\mathbf{i}} \mathrm{m} / \mathrm{s}\). The kinetic energy of centre of mass isTS EAMCET 2010 Hard
- Find the mobility of electron in a wire, if its average collision time is \(9.1 \times 10^{-5} \mathrm{~s}\). (charge of electron \(=1.6 \times 10^{-19} \mathrm{C}\) and mass of electron \(\left.=9.1 \times 10^{-31} \mathrm{~kg}\right)\)TS EAMCET 2022 Medium
- Two coils have mutual inductance \(0.005 \mathrm{H}\). The current changes in the first coil according to equation \(I=I_0 \sin \omega t\), where \(I_0=10 \mathrm{~A}\) and \(\omega=100 \pi \mathrm{rad} \mathrm{s}\). The maximum value of induced emf in the second coil isTS EAMCET 2016 Medium
- An electron collides with a hydrogen atom in its grownd state and excites it to \(n=3\) state. The energy given to the hydrogen atom in this inelastic collision (neglecting the recoil of hydrogen atom) isTS EAMCET 2017 Easy