The following two statements are made with reference to

Home » Mechanics and Structural Analysis » Mechanical and structural analysis miscellaneous » Question

The following two statements are made with reference to the planar truss shown below:

I. The truss is statically determinate
II. The truss is kinematic ally determinate
With reference to the above statements, which of the following applies?

1. Both statements are true.
2. Both statements are false.
3. II is true but I is false.
4. I is true but II is false.

Correct Option: D

For central part DE I
m (no. of members) = 9
j (no of joints) = 6
2j – 3 = 2 × 6 – 3 = 9 = m
∴ it is statically determinate.
There are degrees of freedom for joints (A, B, C)
∴ it is kinematic-ally indeterminate