Calculate the work done for following F-d curves

(1) (A - P); (B - Q); (C - Q); (D - R)
(2) (A - P); (B - R); (C - R); (D - Q)
(3) (A - P); (B - P); (C - Q); (D - R)
(4) (A - P); (B - P); (C - R); (D - Q)

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(A) (B) (C) (D) F(N) -50 15 100 ↑ 10 F(N) ↑ F(N) 5 -15 15 5 -15 3 F(N) 2+ 1+ to 2 1 2 3 1 2 3 d(m) 45 45 d(m) →>> d(m) 1 2 3 4 5 6 d(m) (P) 100 J (Q) 13.5 J (R) 15 J (A) (B) (C) (D) F(N) -50 15 100 ↑ 10 F(N) ↑ F(N) 5 -15 15 5 -15 3 F(N) 2+ 1+ to 2 1 2 3 1 2 3 d(m) 45 45 d(m) →>> d(m) 1 2 3 4 5 6 d(m) (P) 100 J (Q) 13.5 J (R) 15 J