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(b) 3.6J
(d) 1.0 cm
(c) 0.67 J
(d)2000J–5000J
(a)250π²
A uniform chain of length 2m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
(b) 3.6J
(b) 3.6J
See lessA bullet fired in to a fixed target tosses half of it’s velocity after penetrating distance of 3 cm. How much further it will penetrate before coming to rest assuming that if faces constant resistance to it’s motion?
(d) 1.0 cm
(d) 1.0 cm
See lessA block of mass 0.5 kg is moving with a speed of 2m/s on a smooth surface. It strikes another mass of 1 kg and then they move together as a single body. The energy loss during the collision is
(c) 0.67 J
(c) 0.67 J
See lessAn Athlete in the Olympic games covers a distance of 100 m in 10s, this kinetic energy can be estimated to be in the range (assume m = 60 kg)
(d)2000J–5000J
(d)2000J–5000J
See lessA mass of 5 kg is moving along a circular path of radius 1 m. If the mass moves with 300 rev/min. it’s kinetic energy would be.
(a)250π²
(a)250π²
See less