Home
Class 11
PHYSICS
If vec F is the force acting in a partic...

If `vec F` is the force acting in a particle having position vector `vec r` and `vec tau` be the torque of this force about the origin, then

A

`vec( r ).vec(tau)=0" and "vec(F).vec(tau)=0`

B

`vec( r ).vec(tau)ne0" and "vec(F).vec(tau)ne0`

C

`vec( r ).vec(tau)ne0" and "vec(F).vec(tau)=0`

D

`vec( r ).vec(tau)ne0" and "vec(F)xx vec(tau)=0`

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • FORCE

    TARGET PUBLICATION|Exercise Competitive Theinking (4.7 Couple and properties of couple)|1 Videos

  • FORCE

    TARGET PUBLICATION|Exercise Competitive Theinking (4.8 Centre of mass)|19 Videos

  • FORCE

    TARGET PUBLICATION|Exercise Competitive Theinking (4.5 Inertial and non-inertial frames)|2 Videos

  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos

  • FRICTION IS SOLIDS AND LIQUIDS

    TARGET PUBLICATION|Exercise MCQ (EVALUATION TEST)|21 Videos

Similar Questions

Explore conceptually related problems

A force vec(F) = (2 hat(i) + 3 hat(j) + 4 hat(k)) N is applied to a point having position vector vec(r) = (3 hat(i) + 2 hat(j) + hat(k)) m. Find the torque due to the force about the axis passing through origin.

If vec a,vec b,vec c are the position vectors of the vertices of an equilateral triangle whose orthocenter is at the origin,then

Knowledge Check

  • Let F be the force acting on a particle having position vector vecr and vecT be the torque of this force about the origin. Then

    A
    `vecr.vecT =0 and vecF.vecT=0`
    B
    `vecr.vecT=0 and vecF.vecT ne 0`
    C
    `vecr.vecT ne 0 and vecF. vecT=0`
    D
    `vecr.vecT ne 0 and vecF. vecT ne 0`

  • Let vecF be the force acting on a particle having position vector vecr and vec(tau) be the torque of this force about the origin. Then

    A
    `vecr.vec(tau)ne0 and vecF.vec(tau)ne0`
    B
    `vecr.vec(tau)=ne0 and vecF.vec(tau)=0`
    C
    `vecr.vec(tau)=ne0 and vecF.vec(tau)ne0`
    D
    `vecr.vec(tau)=0 and vecF.vec(tau)=0`

  • Let vecF be a force acting on a particle having positon vector vecr. Let vecr be the torque of this force about the origin then

    A
    `vecr.vecGamma=0 and vecF.vecGamma=0`
    B
    `vecr.vecGamma=0 but vecF.vecGamma!=0`
    C
    `vecr.vecGamma !=0but vecF.vecGamma=0`
    D
    `vecr.vecGamma!=0 and vecF.vecGamma!=0`

    • Similar Questions

    Explore conceptually related problems

    A slab is subjected to two forces vec F_(1) and vec F_(2) of same magnitude F as shown in the figure . Force vec F_(2) is in XY-plane while force F_(1) acts along z-axis at the point (2 vec I + 3 vec j) .The moment of these forces about point O will be :

    If vec a,vec b,vec c are the position vectors of the vertices of an equilateral triangle whose orthocentre is t the origin,then write the value of vec a+vec b+vec *

    Let vec(F) be a force acting on a particle having position vector vec( r ) . Let vec( T) be the torque of this force about the origin , then

    If is the force acting on a particle having position vector and be the torque of this force about the origin, then-

    A particle of mass m moves in the xy-plane with velocity of vec v = v_x hat i+ v_y hat j . When its position vector is vec r = x vec i + y vec j , the angular momentum of the particle about the origin is.

    Home
    Profile