A1.60 kg , horizontal, uniform tray is attached to a vertical ideal spring of force constant 195 n/m and a 290 g metal ball is in the tray. the spring is below the tray, so it can oscillate up-and-down. the tray is then pushed down 15.1 cm below its equilibrium point (call this point a) and released from rest. a) how high above point a will the tray be when the metal ball leaves the tray? (hint: this does not occur when the ball and tray reach their maximum speeds.)
b)how much time elapses between releasing the system at point a and the ball leaving the tray
c)how fast is the ball moving just as it leaves the tray?

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj