Solve Bowling Ball Weight & Acceleration: 82 N & 99 N Forces

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SUMMARY

The discussion centers on calculating the weight and acceleration of a bowling ball when lifted with different forces. The weight of the bowling ball is determined to be 78.48 N. When a force of 99 N is applied, the ball accelerates at a rate of 8 times the initial acceleration, denoted as 'a'. The correct application of Newton's second law, F = ma, reveals that the net force must account for the weight of the ball, leading to a clarification on the calculation of acceleration.

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When you lift a bowling ball with a force of 82 N, the ball accelerates upward with an acceleration a. If you lift with a force of 99 N, the ball's acceleration is 8 x a.
(a) Find the weight of the bowling ball.
N
(b) Find the acceleration a.
m/s2


Ok, i found part (a), which is 78.48 N. Now, on part (b) why wouldn't the acceleration be 99 N/ 8 kg, which is 12.37 m/s2? :confused:
 
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What's the net force on the ball?
 
Did you forget that you have to lift with the weight of the ball just to get it moving at all? The force in "F= ma" is 99N- mg.

As usual, Doc Al got there before me!
 

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