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  3. 6. [2pt] in the lab springs, a student sits on a b

6. [2pt] In the lab Springs, a student sits on a bosun's chair suspended by a spring....

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Physics

6. [2pt]
In the lab Springs, a student sits on a bosun's chairsuspended by a spring. If the spring
has a spring constant, k = 1020 N/m, and is stretched by 0.5 m,how
much energy is stored in the spring?

Correct, computer gets: 127.5 J

7. [2pt]
The student gets off the bosun's chair very carelessly and all theenergy in the
spring is converted into the kinetic energy of the seat. The massof the seat is
1 kg. Once the spring has fully contracted, what is the speed ofthe seat?

Answer:  

8. [2pt]
Unfortunately, the student was hit on the head by the seat as itflew up. Some of the kinetic energy of the seat will be convertedinto
gravitational potential energy; neglect this. Assume the impactspeed of
the seat is the same as in the previous question. If the seat comesto rest in 0.01 s as
it hits the student's head, what force would the seat exert on thestudent's
head?

Be safe. Remember: get off the bosun's chaircarefully!

Answer:  

I GOT QUESTION 6, BUT NOT 7 AND 8.

Answer & Explanation Solved by verified expert
3.9 Ratings (692 Votes)
6 The potential energy stored in a springisgiven byWhere k is spring constant and x is expansioncompression inspringGiven k 1020 Nm and x 05 mSoHence the potential energy stored in the spring is 1275 J7 From the work    See Answer
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