Paper 4 May/June 2011 MATHEMATICS (9709/41) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

One end of a light elastic string of natural length $0.4{\text{ }}m$ and modulus of elasticity $20{\text{ }}N$ is attached to a particle $P$ of mass $0.8{\text{ }}kg$. The other end of the string is attached to a fixed point $O$ at the top of a smooth plane inclined at ${30^ \circ }$ to the horizontal. The particle rests in equilibrium on the plane.
a) Calculate the extension of the string.
$P$ is projected from its equilibrium position up the plane…