Αποτελέσματα Αναζήτησης
Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
- 7.2 Kinetic Energy and the Work-Energy Theorem
Explain work as a transfer of energy and net work as the...
- 7.2 Kinetic Energy and the Work-Energy Theorem
The Work-Energy Theorem. The principle of work and kinetic energy (also known as the work-energy theorem) states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle.
The work-energy theorem states that the net work \(W_{net} \) on a system changes its kinetic energy, \(W_{net} = \frac{1}{2}mv^2 - \frac{1}{2}mv_0^2\).
Work-Energy Theorem argues the net work done on a particle equals the change in the particle’s kinetic energy. According to this theorem, when an object slows down, its final kinetic energy is …
30 Οκτ 2023 · Work-Energy Theorem Examples. Here are some examples of using the work-energy theorem: A box moves up a ramp. The work done by the force of gravity is equal to the change in kinetic energy of the box. W = ΔK; A constant force pulls a cart across a distance. The work done by the pulling force is equal to the change in kinetic energy of the cart ...
7 Ιουλ 2023 · Worked example. A particle of mass kg is fired horizontally off a vertical cliff at 8 ms -1 and travels freely under gravity. The cliff is 30 metres high and the ground below is horizontal. Use energy considerations to find the speed of impact of the particle with the horizontal ground below.
Explain work as a transfer of energy and net work as the work done by the net force. Explain and apply the work-energy theorem. Work Transfers Energy. What happens to the work done on a system? Energy is transferred into the system, but in what form? Does it remain in the system or move on? The answers depend on the situation.
