Easy -1.2 This is a straightforward circular motion problem requiring only one step: applying F=mv²/r with all values given directly. It's simpler than average A-level questions as it involves no geometry, no component resolution, and just substitution into a standard formula.
1 A particle \(P\) of mass 0.3 kg is attached to one end of a light inextensible string of length 0.6 m . The other end of the string is attached to a fixed point \(O\) of a smooth horizontal plane. \(P\) moves on the plane at constant speed \(5 \mathrm {~m} \mathrm {~s} ^ { - 1 }\) in a circle with centre \(O\). Calculate the tension in the string.
1 A particle $P$ of mass 0.3 kg is attached to one end of a light inextensible string of length 0.6 m . The other end of the string is attached to a fixed point $O$ of a smooth horizontal plane. $P$ moves on the plane at constant speed $5 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ in a circle with centre $O$. Calculate the tension in the string.
\hfill \mbox{\textit{CAIE M2 2013 Q1 [2]}}