Q7. As shown in the image below, the spring (with spring constant k = 3.2 kN/m) is fixed to block A, and block B is pressed against the spring. The masses of blocks A and B are mà = 19 kg and må = 14 kg, respectively. The spring is initially compressed by 240 mm, and then both blocks are released from rest. Determine the velocity of block B at the instant block Bloses contact with the spring. Right is considered the positive direction and negative sign must be included if the velocity points to the left. (Hint, neglect friction, and since there is no impulsive force, energy is conserved.) Please pay attention: the numbers may change since they are randomized. Your answer must include 3 places after the decimal point, and proper SI unit. Your Answer: A k B

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q7. As shown in the image below, the spring (with spring constant k = 3.2 kN/m) is
fixed to block A, and block B is pressed against the spring. The masses of
blocks A and B are mA = 19 kg and mB = 14 kg, respectively. The spring is initially
compressed by 240 mm, and then both blocks are released from rest. Determine the
velocity of block B at the instant block Bloses contact with the spring. Right is
considered the positive direction and negative sign must be included if the velocity
points to the left. (Hint, neglect friction, and since there is no impulsive force, energy
is conserved.) Please pay attention: the numbers may change since they are
randomized. Your answer must include 3 places after the decimal point, and proper SI
unit.
Your Answer:
Answer
k
A www B
units
Transcribed Image Text:Q7. As shown in the image below, the spring (with spring constant k = 3.2 kN/m) is fixed to block A, and block B is pressed against the spring. The masses of blocks A and B are mA = 19 kg and mB = 14 kg, respectively. The spring is initially compressed by 240 mm, and then both blocks are released from rest. Determine the velocity of block B at the instant block Bloses contact with the spring. Right is considered the positive direction and negative sign must be included if the velocity points to the left. (Hint, neglect friction, and since there is no impulsive force, energy is conserved.) Please pay attention: the numbers may change since they are randomized. Your answer must include 3 places after the decimal point, and proper SI unit. Your Answer: Answer k A www B units
Expert Solution
Step 1

Let VAi and VAf be the initial and final velocities of block A.

Let VBi and VBf be the initial and final velocities of block B.

 

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