
A Definition and Controversy of Energy - Physics Forums
May 27, 2015 · Mechanical Energy: This is the sum of kinetic and potential energy in a mechanical system. According to the law of conservation of mechanical energy, in the absence of non …
Kinetic and Potential Energy of Falling Objects - Physics Forums
Jan 7, 2008 · Hi. If i drop a stone from a height, i understand its Gravitational Potential Energy will decrease and its kinetic enrgy increases. Am i correct in saying that when the stone hits the ground …
Potential difference of helium nucleus question - Physics Forums
Sep 25, 2016 · The discussion centers on calculating the potential difference required to impart 50 keV of kinetic energy to a helium nucleus with a charge of 3.2 × 10 -19 C. The formula used is V = U/Q, …
When to Add/Subtract Kinetic & Potential Energy? - Physics Forums
Oct 4, 2006 · The sum forms the total (mechanical) energy. In the absense of friction, it's a contant (conservation of energy). Since it doesn't matter where the "zero" of potential energy is, assume the …
Understanding Work: Kinetic vs. Potential Energy - Physics Forums
Mar 23, 2014 · Work is defined as the transfer of energy and can be expressed as the change in kinetic energy or as force multiplied by distance. The discussion clarifies that when lifting an object at …
Potential & Kinetic Energy of Basketball & Tennis Ball
Jan 7, 2005 · If energy is conserved, the total kinetic energy after the bounce equals the initial potential energy; however, real-world factors such as heat, drag, and friction lead to energy loss. The …
Spring potential and kinetic energy - Physics Forums
Nov 11, 2021 · The discussion centers on the relationship between elastic potential energy and gravitational potential energy, specifically the equation mgh = (1/2)kx^2. It clarifies that the height (h) …
Is Entropy the inexorable conversion of potential to kinetic energy ...
Oct 11, 2021 · The discussion centers on the relationship between entropy and the conversion of potential energy to kinetic energy. It emphasizes that in isolated systems, potential energy cannot …
Solving for Potential & Kinetic Energy: x=10sin (pi*t+pi/3)
Jun 28, 2009 · 2. I know these equations come into play Kinetic Energy K=1/2*m*ω^2*A^2*sin^2 (ωt+φ) Kmax=1/2 k A^2 K=1/2 mv^2 Potential Energy U=1/2*k*A^2*cos^2 (ωt+φ) U=1/2 kx^2 3. The Attempt …
What type of energy does electrical current have?
Jan 8, 2018 · This discussion highlights the importance of understanding energy transfer mechanisms in electrical systems, emphasizing that energy is not solely derived from kinetic or potential energy but …