A pinball machine launches a 153 g ball with a spring-driven plunger. The game board is inclined at 9 degrees above the horizontal.
Assume: The plunger's mass and frictional effects are negligible. The acceleration of gravity is 9.8 m/s2.
Find the force constant 'K' of the spring that will give the aball a speed of 124 cm/s when the plunger is released from rest with the spring compressed 5 cm from its relaxed position.