Question

The linear velocity of a rotating body is given by vec(v)=vec(omega)xxvec(r), where vec(omega) is the angular velocity and vec(r) is the radius vector. The angular velocity of a body is vec(omega)=hat(i)-2hat(j)+2hat(k) and the radius vector vec(r)=4hat(j)-3hat(k), then |vec(v)| is-

Answer 1

Answer:

ANSWER

Here, v=ω×r=(i^−2j^+2k^)×(4j^−3k^)=−2i^+3j^+4k^

Thus, ∣v∣=(−2)2+32+42=29 units