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Find the torque of a force (7 hati+3 hat...

Find the torque of a force `(7 hati+3 hatJ-5hatk)`about the origin .the force acts on a particle whoe positio vector is `(hati-hatj+hatk)`.

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Find the vector projection of the vector 7hati+hatj-hatk on 7hati+hatj-3hatk .

Find the projection of the vector hati+3hatj+7hatk on the vector 2hati-3hatj+6hatk .

Find the work done by the force vecF=hati+2hatj+hatk acting on a particle, if the particle is displaced from the point with position vector 2hati+hatj+hatk to the point with position vector 3hati+2hatj+4hatk .

Find the work done by the force vecF=2hati+hatj+hatk acting on a particle, if the particle is displaced from the point with position vector 2hati+2hatj+2hatk to the point with position vector 3hati+4hatj+5hatk .

Find the projection of the vector hati+3hatj+7hatk on the vector 7hati-hatj+8hatk .

Two unlike forces of equal magnitudes hatj+2hatk and -hatj-2hatk are acting at the points whose position vectors are given by hati+hatj+hatk and hati+2hatj+3hatk respectively. Find the moment of the couple formed by these forces.

Write the projection of the vector 7hati+hatj+4hatk on the vector 2hati+6hatj+3hatk .

JBD PUBLICATION-MOTION OF SYSTEM OF PARTICLES AND RIGID BODY-EXAMPLE
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