The method of joints helps us to find out the unknown force in the tru...
Method of joints defines as if the whole truss is in equilibrium then all the joints which are connected to that truss is in equilibrium. While the method of section cuts the whole structure of trusses into section and then uses the cut out portion for the calculations of the unknown forces. Thus both the methods are used for the same purpose.
The method of joints helps us to find out the unknown force in the tru...
The correct answer is option 'C': The first part of the statement is true and the other part is false.
Explanation:
Method of Joints:
The method of joints is a technique used to analyze trusses by considering the equilibrium of each joint. It allows us to determine the unknown forces acting on the joints of the truss. By applying the principles of statics, we can solve for these unknown forces by considering the forces in equilibrium at each joint.
Method of Sections:
The method of sections is another technique used to analyze trusses. It involves cutting the truss into two sections and analyzing the equilibrium of one of the sections to determine the unknown forces. This method allows us to calculate the forces in members that are not directly connected to the joints.
Correcting the statement:
The first part of the statement is true because the method of joints does help us find out the unknown forces in the truss joints. However, the second part of the statement is false. The method of sections is not used to calculate the direction of the zero members. Instead, it is used to determine the forces in members that are not directly connected to the joints.
The correct statement should be:
"The method of joints helps us to find out the unknown forces in the truss joints. However, the method of sections is used to calculate the forces in members that are not directly connected to the joints, not the direction of the zero members."
In conclusion, while the first part of the statement is true, the second part is false. The method of sections is not used to calculate the direction of the zero members in trusses.