The torque of a force `vecF` about a point is defined as `vecGamma=vecrxxvecF`. Suppose `vecr,vecF and vecGamma` are all nonzero. Is `vecrxxvecGamma||vecF` always true? Is it ever true?

Find the torque of a force vecF=2hati+hatj+4hatk acting at the point vecr=7hati+3hatj+hatk :

Find the torque of a force vecF= -3hati+hatj+5hatk acting at the point vecr=7hati+3hatj+hatk

The work done by a force vecF during a displacement vecr is given by vecF.vecr . Suppose a force of 12 N acts on a particle in vertically upward directionand the particle is displaced through 2.0 m in vertically downward direction. Find the work done by the force during this displacement.

The work done by a force vecF during a displacement vecr is given by vecF.vecr . Suppose a force of 12 N acts on a particle in vertically upward directionand the particle is displaced through 2.0 m in vertically downward direction. Find the work done by the force during this displacement.

Find the torque of a force vecF=-3hati+2hatj+hatk acting at the point vecr=8hati+2hatj+3hatk about origin

The torpue of force vecF=-2hati+2hatj+3hatk acting on a point vecr=hati-2hatj+hatk about origin will be :

Assertion: If as force vecF passes through Q(vecb) then moment of force vecF about P( veca ) is vecFxxvecr, where vecr=vec(PQ) , Reason Moment is a vector. (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

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

Assertion: The vector product of a force vecF and displacement vecr is equal to the work done. Reason: Work is not a vector. (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Find the torque (vectau=vecrxxvecF) of a force vecF=-3hati+hatj+3hatk acting at the point vecr=7hati+3hatj+hatk