Find the acceleration of the blocks and the tension in the string.
At a particular instant, the speed of the blocks is \(1 \mathrm {~m} \mathrm {~s} ^ { - 1 }\). Find the time, after this instant, that it takes for the blocks to travel 0.65 m .
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A small ring \(P\) is threaded on a fixed smooth horizontal \(\operatorname { rod } A B\). Three horizontal forces of magnitudes \(4.5 \mathrm {~N} , 7.5 \mathrm {~N}\) and \(F \mathrm {~N}\) act on \(P\) (see diagram).
Given that these three forces are in equilibrium, find the values of \(F\) and \(\theta\).
It is given instead that the values of \(F\) and \(\theta\) are 9.5 and 30 respectively, and the acceleration of the ring is \(1.5 \mathrm {~m} \mathrm {~s} ^ { - 2 }\). Find the mass of the ring.