Paper 5 October/November 2011 MATHEMATICS (9709/51) 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 inextensible string of length $0.2{\text{ }}m$ is attached to a fixed point $A$ which is above a smooth horizontal surface. A particle $P$ of mass $0.6{\text{ }}kg$ is attached to the other end of the string. $P$ moves in a circle on the surface with constant speed $vm{\text{ }}{s^{ - 1}}$, with the string taut and making an angle of ${30^ \circ }$ to the horizontal (see diagram).
a) Given that $v = 1.5$, calculate the magnitude of the force that…