Equilibrium & Truss

A beam is subjected to an inclined concentrated load as shown in the figure below. Neglect the weight of the beam.

• 
• 
• 
• 

A bar of uniform cross section and weighing 100 N is held horizontally using two massless and inextensible strings S1 and S2 as shown in the figure. The tension of the string S1 (in N) is

(a)  

A rigid ball of weight 100 N is suspended with the help of a string. The ball is pulled by a horizontal force F such that the string makes an angle of 30∘ with the vertical. The magnitude of force F (in N) is __________

• 55

• 58

• 60

• 62

(a)  

A framed structure is Redundant, if the number of members are __________ (2j - 3), where j is the number of joints.

• Equal to

• Less Than

• Greater Than

• None

In the truss shown below, how many zero force members can be identified?

• 5

• 4

• 6

• 7

The figure shows an idealized plane truss. If a horizontal force of 300 N is applied at point A, then the magnitude of the force produced in member CD is (a)   N.

A truss is composed of members AB, BC, CD, AD and BD, as shown in the figure. A vertical load of 10 kN is applied at point D. The magnitude of force (in kN) in the member BC is____

• 3

• 5

• 7

• 10

Two identical trusses support a load of 100 N as shown in the figure. The length of each truss is 1.0 m; cross-sectional area is 200 mm² ; Young's modulus E = 200 GPa. The force in the truss AB (in N) is (a)  

A two member truss ABC is shown in the figure. The force (in kN) transmitted in member AB is

• 10

• 15

• 20

• 25