Question

/A force F = (6i+2j - 3k) acts on a particle and
produces a displacement of s = (2î - 3j + xk) - What
is the value of x if the work done is zero ?
(b) 3
a
)
4​

Answer 1

Answer:5^-2 or square root of 5

Explanation:as work done is 0,displacement is 0.

so displacement :   square root of 2^2-3^2+x^2=0

send square root that side (no change)

2^2-3^2+x^2=0

4-9+x^2=0

-5+x^2=0

x^2=5

x=5^-2 or square root of 5