MCQ
Three forces start acting simultaneously on a particle moving with velocity $\vec{\text{v}.}$ These forces are represented in magnitude and direction by three sides of a triangle taken in the same order. The particle will now move with a velocity.
  • A
    Less then $\vec{\text{v}}$
  • B
    More than $\vec{\text{v}}$
  • C
    $\vec{\text{v}}$ only

Answer

  1. $\vec{\text{v}}$ only.

Explanation:

Resultant of three forces represented completely by three sides of a triangle taken in the same order is zero. Therefore, velocity of particle remains unaffected.

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 rigid body can be hinged about any point on the $x$ -axis. When it is hinged such that the hinge is at $x$, the moment of inertia is given by $I = 2x^2 - 12x + 27$ The $x$ -coordinate of centre of mass is
Two wires of same diameter of the same material having the length $l$ and $2l.$ If the force $  F$ is applied on each, the ratio of the work done in the two wires will be
The work of $146\,kJ$ is performed in order to compress one kilo mole of a gas adiabatically and in this process the temperature of the gas increases by $7\,^oC$ . The gas is $(R = 8.3\, J\, mol^{-1}\, K^{-1})$
The acceleration of a train travelling with speed of $400 \,m/s$ as it goes round a curve of radius $160\,m$, is
For circular motion, if ${\vec a_t},\,{\vec a_c},\,\vec r$ and $\vec v$ are tangential acceleration, centripetal acceleration, radius vector and velocitym respectively, then find the wrong relation
It is desired to increase the fundamental resonance frequency in a tube which is closed at one end. This can be achieved by
If $\lambda_{ m }$ denotes the wavelength at which the radioactive emission from a black body at a temperature $T \;K$ is maximum, then
The average distance between molecules of an ideal gas at $STP$ is approximately of the order of
One mole of a monoatomic gas and one mole of a diatomic gas are initially in the same state. Both gases are expanded isothermally and then adiabatically, such that they acquire the same final state. Choose the correct statement.
A projectile is launched with a speed of $10\,m / s$ at an angle $60^{\circ}$ with the horizontal from a sloping surface of inclination $30^{\circ}$. The range $R$ is $........\,m$ (Take $g=10\,m / s ^2$ )