Question

A force of fk^ acts on o, the origin of the co-ordinate system, the larque about the point (1, -1) is

Answer 1

$Force (f) = f \: \hat k \\ \\ displacement \: (s) = 1 \hat i - 1 \hat j \\ \\ torque = f \times s \\ \\ = f \: \hat k \times (1 \hat i - 1 \hat j) \\ \\ = f \: \hat k \times 1 \hat i - f \: \hat k \times 1 \hat j \\ \\ = f \hat j + f \hat i \\ \\ = f( \hat i + \hat j)$

Answer 2

Answer:-

(f)=f k^(s)=1

=i^ −1 j^

=f×s

=f k^ ×(1 i^ −1 j^ )

=f k^×1

=i^ −f k^ ×1 j^

=f j^ +f i^

=f( i^ + j^ )