Physics Past Questions and Answers

A block of mass \(2.0 \mathrm{~kg}\) resting on 1 smooth horizontal plane is acted upon. simultaneously by two-forces, \(10 \mathrm{~N}\) one North and \(10 \mathrm{~N}\) due East. The miagnitude if the acceleration produced by the forces on the block is ____________

A metal block of mass \(5 \mathrm{~kg}\) lles on a rough horizontal platform. If a horizontal force of \(8 \mathrm{~N}\) applied to the block through Its centre of mass just slide block on the platform, the coefficlent of limiting friction between the block and the platform is ____________

Which of the following is NOT a force?

Two masses \(40 \mathrm{~g}\) and \(60 \mathrm{~g}\) respectively, are attached firmly to the ends of a light metre rule. The centre of gravity of the system is ____________

A \(0.05 \mathrm{~kg}\) bullet travelling at \(200 \mathrm{~ms}\) horizontal strike; a thick vertical wall a load of mass \(10 \mathrm{~kg}\) is suspended on the rule at \(L\), the \(10 \mathrm{~cm}\) mark. If the rule is kept in equilibrium by a string \(p\), fixed at p and attached to the rule at \(\mathrm{R}\), the \(20 \mathrm{~cm}\) mark, then the tension \(T\) In the string is ____________