Question

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m.

A) What upward speed can it give to a 0.320-kg ball when released?

B) How high above its original position (spring compressed) will the ball fly?   

  

Answer 1

You can refer to this question below.

Question:

A vertical spring (ignore its mass), whose spring constant is 875 N/m, is attached to a table and is compressed down by 0.160 m.

A. What upward speed can it give to a .380 kg ball when released?

B. How high above its original position (spring compressed) will the ball fly?

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Ans:

a) 0.5*k*x^2= 0.5*m*v^2-m*g*x

0.5*875*0.16^2 = 0.5*0.38*v^2 - 0.38*9.8*0.16
v = 7.88 m/s

b) the height will be
0.5*k*x^2=m*g*h
h=0.5*875*0.16^2/(0.38*9.8) = 3.01 m

Answer 2

To the person above, it's saying "Review your calculations; you may have made a rounding error or used the wrong number of significant figures." to part A.