1. A steam turbine is running at 2400 revolutions/minute. On shutting off steam it slows down & comes to rest in 4 minutes. If the angular retardation is uniform,find its m magnitude in radians per second square & also the no. of revolutions made by the turbine before coming to rest.
OR
2. A slender prismatic bar of weight W=36 N is free to rotate in a vertical plane about a fixed axis through’ O’. The bar is released from rest in the unstable position of equilibrium & falls into the horizontal position A’B’, where it is brought to rest by 2 identical springs having constant K. If the spring A is compressed 1.27 cm before the bar comes to rest, what is the spring constant?
