MCQ
In circular motion, the centripetal acceleration is given by
  • A
    $\vec a\,\times \,\vec r$
  • $\vec \omega \,\times \,\vec v$
  • C
    $\vec a\,\times \,\vec v$
  • D
    $\vec \omega \,\times \,\vec r$

Answer

Correct option: B.
$\vec \omega \,\times \,\vec v$
b
The centipetal acceleration is given by $\vec{\omega} \times \overrightarrow{ V }$

This term $\vec{\omega} \times \overrightarrow{ V }$ is centipetal acceleration.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A particle of charge $Q$ and mass $M$ moves in a circular path of radius $R$ in a uniform magnetic field of magnitude $B$. The same particle now moves with the same speed in a circular path of same radius $R$ in the space between the cylindrical electrodes of the cylindrical capacitor. The radius of the inner electrode is $R/2$ while that of the outer electrode is $ 3R/2.$ Then the potential difference between the capacitor electrodes must be
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction.......$^o$ ?
The maximum velocity (in $ms^{-1}$) with which a car driver must traverse a flat curve of radius $150 \,m$ and coefficient of friction $0.6$ to avoid skidding is
The extension of a wire by the application of load is $3$ $mm.$ The extension in a wire of the same material and length but half the radius by the same load is..... $mm$
An elastic material of Young's modulus $Y$ is subjected to a stress $S$. The elastic energy stored per unit volume of the material is
An uncharged parallel plate capacitor having a dielectric of constant $K$ is connected to a similar air cored parallel capacitor charged to a potential $V$. The two capacitors share charges and the common potential is $V$. The dielectric constant $K$ is
The respective speeds of the molecules are $1, 2, 3, 4$ and $5\, km/sec.$ The ratio of their $r.m.s. $ velocity and the average velocity will be
If $L$ denotes the inductance of an inductor through which a current $i$ is flowing, the dimensions of $L{I^2}$ are
The isothermal Bulk modulus of an ideal gas at pressure $P$ is
Following figure shows $P-T$ graph for four processes $A, B, C$ and $D$. Select the correct alternative