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Kinetic Energy and the Work-Energy Theorem. 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. 7.3. Gravitational Potential Energy. Explain gravitational potential energy in terms of work done against gravity.
Work-Energy Theorem: W = ΔK + ΔU g = ΔE •The total energy of a system changes by the amount of work done on it. •When a net force performs work on an object, the result could be a change in the kinetic energy of the object and/or a change in the potential energy.
This equation is called the work–kinetic energy theorem. Thus, continuing with the example of falling body, the work performed on the body results in an increase of its kinetic energy.
3 paź 2023 · I. WORK AND ENERGY. We now want to introduce the concept of energy and derive the mechanical energy conser-vation theorem. Note the words derive and theorem. In contrast to some texts which present this subject as a new physical law, we will show that it is the consequence of Newton’s laws. Thus, it is a theorem.
Work-energy theorem: The net/total work done on an object is equal to the change in the object’s kinetic energy. In symbols: Wnet = ∆ EK. 2 Wnet = 2m(vf. - vi 2) Conservative force: The work done by the force in moving an object between 2 points is independent of the path taken ex. gravitational, electrostatic and elastic forces.
This is the work-energy theorem, which states that the work done by the resultant force F acting on a particle as it move from point 1 to point 2 along its trajectory is equal to the change in the kinetic energy (T 2 −T 1 ) of the particle during the given displacement.
Work-Energy Theorem: (a special case of the law of conservation of energy) The change in kinetic energy of a system equals the sum of work done by all the individual forces on the system: ∆K = ∑W Strictly speaking this theorem applies to rigid ("non-squishy") objects KJF §10.3
