Two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table.The target box is horizontal distance D = 2.20 m from the edge of the tabel. Bobby compresses the spring 1.10 cm, but the center of the marble falls 27.0 cm short of the center of the box. How far should Rhoda compress the spring to score a direct hit? Assume that neither the spring nor the ball encounters friction in the gun.

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Q: A toy cannon uses a spring to project a 5.30-g soft rubber ball. The spring is originally compressed…

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A: Solution:   Given Values, mass(m)=22 g =0.022 Kg height(h)=45 cm=0.45 m

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Q: Two blocks with masses 0.342 kg (A) and 0.719 kg (B) sit on a frictionless surface. Between them is…

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Q: How much was the spring compressed initially?

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Q: A gun fires a 21-gram bullet on a 1.8 kg wooden block hanging vertically at the end of string (The…

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.