Answer
(a) 735 N
(b) 735 N
(c) 885 N
Work Step by Step
(a) If the elevator is at rest, $W=mg=75.0\,kg\times9.80\,m/s^{2}=735\,N$
(b) Also, if it is moving up or down with a constant velocity, $W=mg=735\,N$
(c) When it accelerates up, $W=m(g+a)=75.0\,kg(9.80\,m/s^{2}+2.00\,m/s^{2})=885\,N$
