Mechanical Engineering Principles

BENDING MOMENT AND SHEAR FORCE DIAGRAMS 83

Answers to Exercise 32 (pages 81)

(a)

A

0

BMD

SFD

21 kN

−21 kN

3.5 m 3.5 m

36.75 kN m

0

00

B

(b)

A

0

BMD

SFD

30 kN

−30 kN

6 m 6 m

90 kN m

0

00

B

Figure 6.44

(a)

00

0

AB

0

BMD

−75 kN m

−30 kN

(b)

00

0

AB

0

BMD

−202.5 kN m

−45 kN

SFD SFD

Figure 6.45

4. The maximum shearing force for the can-
   tilever of question 3 is:

(a) 4 kN (b) 12 kN

(c) 3 kN (d) zero

5. A cantilever of 3 m length carries a UDL
   of 2 kN/m. Its maximum shearing force
   is:

(a) 3 kN (b) 2 kN

(c) 6 kN (d) zero

6. In the cantilever of question 5, the maxi-
   mum bending moment is:

(a) 6 kN m (b) 9 kN m

(c) 2 kN m (d) 3 kN m