enEnglishguગુજરાતી
NEET · Physics · STD 11 - 6. system of particles and rotational motion
A light rod of length \(l\) has two masses \(m_1\) and \(m_2\) attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is
- A \((m_1+m_2)l^2\)
- B \(\sqrt {{m_1}{m_2}} {l^2}\)
- C \(\frac{{{m_1}{m_2}}}{{{m_1} + {m_2}}}{l^2}\)
- D \(\;\frac{{{m_1} + {m_2}}}{{{m_1}{m_2}}}{l^2}\)
Answer & Solution
Correct Answer
(C) \(\frac{{{m_1}{m_2}}}{{{m_1} + {m_2}}}{l^2}\)
Step-by-step Solution
Detailed explanation
Here,\({l_1} + {l_2} = l\) Center of mass of the system,
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 satellite is orbiting just above the surface of the earth with period \(T\). If \(d\) is the density of the earth and \(G\) is the universal constant of gravitation, the quantity \(\frac{3 \pi}{G d}\) represents :NEET 2023 Medium
- A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of \(27\,^o C\) two successive resonances are produced at \(20\, cm\) and \(73\, cm\) of column length. If the frequency of the tuning fork is \(320\, Hz,\) the velocity of sound in air at \(27\,^o C\) is .... \(m/s\)NEET 2018 Hard
- A siren emitting a sound of frequency \(800\,\, Hz\) moves away from an observer towards a cliff at a speed of \(15 \,\,m s^{-1}\). Then, the frequency of sound that the observer hears in the echo reflected from the cliff is .... \(Hz\)
(Take velocity of sound in air \(= 330\,\, m s^{-1}\))NEET 2016 Easy - A body of mass \(1\, kg\) begins to move under the action of a time dependent force \(\overrightarrow {\;F\;} = (2t\hat i + 3{t^2}\hat j\)) \(N\) where \(\hat i\) and \(\hat j\) are unit vectors along \(x\) and \(y\) axis. What 10.Power will be developed by the force at the time \(t\)?NEET 2016 Hard
- Inside a parallel plate capacitor the electric field \(E\) varies with time as \(t^2\). The variation of induced magnetic field with time is given byNEET 2017 Easy
- The value of \(\gamma\left(=\frac{\mathrm{C}_{\mathrm{p}}}{\mathrm{C}_{\mathrm{v}}}\right),\) for hydrogen, hellium and another ideal diatomic gas \(X\)(whose molecules are not rigid but have an additional vibrational mode), are respectively equal toNEET 2019 Medium
More PYQs from NEET
- The process of translation of mRNA to proteins begins as soon as :NEET 2022 Medium
- A man with blood group \(‘A’\) marries a woman with blood group \(‘B’\). What are all the possible blood groups of their offsprings?NEET 2015 Medium
- The given electrical network is equivalent to
NEET 2017 Medium - When vapours of a secondary alcohol is passed over heated copper at \(573 \;K\), the product formed isNEET 2019 Medium
- Inflorescence is racemose inNEET 2013 Medium
- An energy of \(484\,J\) is spent in increasing the speed of a flywheel from \(60\,rpm\) to \(360\,rpm\). The moment of inertia of the flywheel is \(.............\,kg - m ^2\)NEET 2022 Easy