7. A 315 N force F and a 70 N m couple M are applied to corner A of a block, as

Question

7. A 315 N force F and a 70 N m couple M are applied to corner A of a block, as shown below. If F and M are instead represented by an equivalent force-couple system FR and Mp acting at point D, then which of the following statements is true about FR and MR? 240 mm 60mm FH 120 mm 180 mm 360 mm 1S0 mm a.) FR F and MR = M. b) FR F and IMRI 70 N-m, but the direction of MR s different from that of M. c.) MR M and FRl 315 N, but the direction of FR is different from that of F. d.) IFRl 315 N and JMR 70 N.m, but the direction of MR is different from that of M, and the direction of FR is different from that of F e.) IFRI315 N and IMRI 70 N·m, but the direction of MR is the same as that of M, and the direction of FR is the same as that of F f.) FR .. F, Mral 7O Nrn, and the direction of MR is different from that of M. g.) IFRI315 N, IMRI70 N-m, the direction of MR s different from that of M, and the direction of FR is the same as that of F h31FRI315 N, IM RI = 70 Nm, the direction of MR s different from that of M, and the direction of FR is different from that of F i) FR = F, lMRH 70 N-m, and the direction of MR s the same as that of M. j.) None of the above.

Explanation / Answer

Ans:   In the Given data

The Following Statements are

a), d), e) are true

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