A pinball machine launches a 146 g ball with
a spring-driven plunger. The game board is
inclined at 5 degrees above the horizontal.
Assume: The plungers 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 ball a speed of 101 cm/s when the
plunger is released from rest with the spring
compressed 2 cm from its relaxed position.
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