Paper 5 October/November 2009 MATHEMATICS (9709/52) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

An object is made from two identical uniform rods $AB$ and $BC$ each of length $0.6{\text{ }}m$ and weight $7{\text{ }}N$. The rods are rigidly joined to each other at $B$ and angle $ABC = {90^ \circ }$.
a) Calculate the distance of the centre of mass of the object from $B$.
The object is freely suspended at $A$ and a force of magnitude $F{\text{ }}N$ is applied to the rod $B$C at $C$. The object is in equilibrium with $AB$ inclined at ${45^ \circ }$…