2. A compressed vertical spring stores 40 J of poten- tial energy. The spring ha

Question

2. A compressed vertical spring stores 40 J of poten- tial energy. The spring has a 0.1-kg stone resting on it. The spring is released, throwing the stone straight up into the air. (a) How much kinetic energy will the stone have when it first leaves the spring? (b) How much gravitational energy, relative to the spot where the stone was released, will the stone have when it reaches the peak of its flight? (c) Calculate the height above the release point to which the stone travels. (d) Suggest something we could change about this situation that would cause the stone to reach a height double that calculated in Part (c)

Explanation / Answer

(A) from energy conservation,

stored spring PE will convert in KE of stone

KE = 40 J  

(B) now this KE will convert into gravittaional PE.

at peak , KE = 0

so PE = 40 J

(C) PE = m g h

40 = 0.1x 9.8 x h

h = 40.8 m

(D) If want h to be double.

use stone of half mass.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

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