Question

the line of action of force F = i -2j passes through the point whose position vector -j +k find the moment of force about the origin​

Answer 1

Answer:

it should be done by using vector multiplication.

moment vector= r vector×f vector ( it should not be changed)

moment= (-j+k) X ( i-2j)= 2i +j+k.✌️✌️✌️