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Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 10 - Circular Motion > One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v the net force on the particle ( directed towards the centre ) will be(T represents the tension in the strings)

One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v the net force on the particle ( directed towards the centre ) will be(T represents the tension in the strings)

Two bodies of masres 1kg and 3kg have position vectors i^+2j^ ​+ k^ and − 3i − 2j^​ + k^ respectively. The centre of mass of this system has a position vector