Let vector F be a force acting on a particle having position vector vector r.

Monjur Alahi

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

(a) vector r . vector T = 0 and vector F. vector T= 0 

(b) vector r. vector T = 0 but vector F vector T ≠ 0 

(c) vector r . vector T ≠ 0 but vector F. vector r ≠ 0 

(d) vector r . vector F ≠ 0 and  vector F . vector T ≠ 0.


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

(a) vector r . vector T = 0 and vector F. vector T= 0 

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
When forces F1 , F2 , F3 are acting on a particle of mass m such that F2 and F3 are mutually perpendicular, then the particle remains stationary.

(a) : F2 and F3 have a resultant equivalent to F1  Therefore,  Acceleration = F1/m.  

1 Answers 2 views
A person says that he measured the acceleration of a particle to be nonzero while no force was acting on the particle.

(d) He might have used noninertial frame. Explanation: (d) is true because if a particle with no force acting on it is viewed from a non-inertial frame that is moving with a...

1 Answers 1 views
A person applies a constant force vector F on a particle of mass m and finds that the particle moves in a circle of

(b) There are other forces on the particle.  (d) The resultant of the other forces varies in magnitude as well as in direction. Explanation:  Above situation is possible when resultant of external forces...

1 Answers 1 views
A force vector F= vector v x vector A is exerted on a particle in addition to the force of gravity,

Since we need equilibrium, \(v\times A+mg=0\) Given that, \(\vec F=\vec u\times \vec A \) and \(\vec mg\) act on the particle. Velocity must be in direction perpendicular to plane in which gravity acts. Thus, \(v \times A=Av\,sin\theta,\,\theta\) is the angle...

1 Answers 1 views
The non-zero vectors vector a, vector b and vector c are related by vector a = 8vector b and vector c = - 7vector b.

(a) : vector a = 8vector b vector c = - 7vector b vector a and vector b are parallel and vector b and vector c are antiparallel. Thus vector a and vector c are...

1 Answers 1 views
Let vector C = vector A + vector B. (a) | vector C | is always greater than | vector A |

(b) It is possible to have | vector C | < | vector A | and | vector C | < | vector B | 

1 Answers 1 views
A person says that he measured the acceleration of a particle to be nonzero while no force was acting on the particle,

(d) He might have used noninertial frame. Explanation: Because if a particle with no force acting on it is viewed from a non-inertial frame that is moving with a certain acceleration, then...

1 Answers 1 views
What is the direction of the force acting on a charge particle q, moving with a velocity vector v in a uniform magnetic field vector B?

Force, vector Fm = q vector v x vector B Obviously, the force on charged particle is perpendicular to both velocity vector v and magnetic field vector B?

1 Answers 1 views
If vector α=3i-j and vector β=2i+j-3k,then express vector β in the form vector β =vector β1+vector β2,

Thanks mam And big thanks to this app that solves most of the jee question

1 Answers 1 views
Assertion (A).Pent-1-ene and pent-2-ene are position isomers Reason (R). Position isomers differ in the position

(a) If both assertion and reason are true, and reason is the true explanation of the assertion.

1 Answers 1 views
X