Consider the rigid bar ABC supported by the pin-jointed links BD and CE and subjected to a load $P$ at the end $A$, as shown in the figure. The axial rigidities of $B D$ and $C E$ are 22500 kN and 15000 kN , respectively. If CE elongates by 5 mm due to the load P , the magnitude of the downward deflection (in mm ) of the end $A$ would be _________ (rounded off to the nearest integer).

An idealised frame supports a load as shown in the figure. The horizontal component of the force transferred from the horizontal member PQ to the vertical member RS at P is _______ N (round off to one decimal place).

Which of the following statements is/are correct?

Which one of the following sets gives the correct values of the force, stress and change in length of the horizontal member $$QR$$?