2a,b,c 2. Spring Scale Surprise It you go to the produce section of certain old

Question

2a,b,c

2. Spring Scale Surprise It you go to the produce section of certain old school grocery stoses, you'll find an apparatus for weighing fruits and vegetables hanging from the ceiling. The apparatus consists of a pan where you place the produced hanging from a "spring scale that is itself hanging from the cr spring inside of the spring scale will stretch and indicate a weight reading 0N Suppose that a spring scale is connected between two 100 N masses as in the figure. a. According to your physical intuition, what will be the reading on the spring scale in Newtons?

Explanation / Answer

A) According to the physical intuition, the reading of the sprig scale should be 200N because there are two weights of 100N each on both sides of the spring.

B) But by applying Newton's Second law on each weight we get T = 100N tension in the spring. So the reading of the spring scale is only 100N.

C) Intuition doesn't agree with the result. Intuition assumes greater reading because of the greater weight attached to the spring. The truth is the reading of the spring scale is not due to the weight but due to the tension in the spring.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.