Home
Class 12
PHYSICS
Find the torque of a force vecF= -3hati+...

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

A

`14hati- 38 hatj + 16 hatk`

B

`4hati + 4hatj + 6hatk`

C

`-21hati + 4hatj+ 4hatk`

D

`-14hati + 38 hatj - 16 hatk`

Text Solution

Verified by Experts

The correct Answer is:
A
`vectau = |{:(hati, hatj, hatk),(7,3,1),(-3,1,5):}| =hati(15-1) - hatj(35 +3) +hatk(7+9)=14hati - 38 hatj + 16 hatk`
Promotional Banner

Similar Questions

Explore conceptually related problems

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+2hatj+hatk acting at the point vecr=8hati+2hatj+3hatk about origin

What is the torque of the force vecF=(2hati+3hatj+4hatk)N acting at the point vecr=(2hati+3hatj+4hatk)m about the origin? (Note: Tortue, vectau=vecrxxvecF )

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

The torque of the force vecF=(2hati-3hatj+4hatk)N acting at the point vecr=(3hati+2hatj+3hatk)m about the origin be

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

Find the torque of a force vecF=3hati+4hatj+5hatk N about a point O , whose position vector is vecr = hati+hatj+hatk m .

Find the torque of a force (7 hati + 3hatj - 5hatk) about the origin. The force acts on a particle whose position vector is (hati - hatj + hatk) .