A 1.60 kg , horizontal, uniform tray is attached to a vertical ideal spring of force constant 200 N/m and a 265 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 14.7 cm below its equilibrium point (call this point A) and released from rest. Now I know Fspring will be equal to total weight at the point where ball leaves the tray but I want to learn why? both Fspring and total weight are downwards at that point and I don't understand where do we know it.

69. air frictionthe velocity of the satellitea. decreases b. increases c. sometimes increases sometimedecreases d. no effect at all70. the unit of gravitational potential energy isa.jouté b.watt c. newtond.pascal71. which of the following is not influenced by a magneta. cobalt b.copper c.irond. nickel72. one joule of work done in one second by unit positive chargea.1 watt b.1 volt c.1 js d. none73. the most deviated colour of light after passing through a prisea. violet b.red c. green d.yellow4. a coin is placed below a beaker fill with water upto 12 cm isdisplaced by water isa. 9cm b.6cmс.3cmd.7cm