d (mm) P(kN) Q(N) Oallow (MPa) s (%) 20 18 80 12 40 1 (a) The structure shown in Figure Q3 is subjected to two point loads as shown. Determine (i) the axial force in rod BC and the reactions at pin A in terms of P. The value o angle, 0 is given in Table 3. the maximum load, P that can be applied if the average shear stress in eacl (ii) pin is not allowed to exceed 60 MPa. All pins are subjected to double shea and each has a diameter, d as given in Table Q3. (Hint: Consider only pin and pin B.) RB 2 m-+-2 m P P Figure Q3 (b) A nylon thread is to be subjected to tension of Q (N). The modulus of elasticity, E of the thread is 3.2 GPa. Determine the required diameter of the thread, if (i) the maximum allowable normal stress is as given in Table 3; (ii) the length of the thread must not increase by more than s (%) as given in
d (mm) P(kN) Q(N) Oallow (MPa) s (%) 20 18 80 12 40 1 (a) The structure shown in Figure Q3 is subjected to two point loads as shown. Determine (i) the axial force in rod BC and the reactions at pin A in terms of P. The value o angle, 0 is given in Table 3. the maximum load, P that can be applied if the average shear stress in eacl (ii) pin is not allowed to exceed 60 MPa. All pins are subjected to double shea and each has a diameter, d as given in Table Q3. (Hint: Consider only pin and pin B.) RB 2 m-+-2 m P P Figure Q3 (b) A nylon thread is to be subjected to tension of Q (N). The modulus of elasticity, E of the thread is 3.2 GPa. Determine the required diameter of the thread, if (i) the maximum allowable normal stress is as given in Table 3; (ii) the length of the thread must not increase by more than s (%) as given in
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Subject
Transcribed Image Text:e (C)
d (mm)
P(kN) Q(N)
Gallow (MPa) s(%)
20
18
80
12
40
1
(a)
The structure shown in Figure Q3 is subjected to two point loads as shown. Determine
(i)
the axial force in rod BC and the reactions at pin A in terms of P. The value of
angle, 0 is given in Table 3.
the maximum load, P that can be applied if the average shear stress in each
(ii)
pin is not allowed to exceed 60 MPa. All pins are subjected to double shear
and each has a diameter, d as given in Table Q3. (Hint: Consider only pin A
and pin B.)
RB
2 m-+-2 m
P
P
Figure Q3
(b)
A nylon thread is to be subjected to tension of Q (N). The modulus of elasticity, E of
the thread is 3.2 GPa. Determine the required diameter of the thread, if
(i)
the maximum allowable normal stress is as given in Table 3;
(ii)
the length of the thread must not increase by more than s (%) as given in
Table 3
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