1. Define work and state the work-energy theorem. (3 pts) 2. Give an example of
ID: 3308915 • Letter: 1
Question
1. Define work and state the work-energy theorem. (3 pts) 2. Give an example of a conservative force and a non-conservative force. Please give an explanation along with examples. (2 pts) 3. The figure on the right shows a system of two masses connected by a string. As m falls a distance h, M accelerates up the plane. The coefficient of friction between M and the inclined plane is p. Show in detail that the change of kinetic energy is given by AK=-(m+M)[v-v2]. Do not assume that system starts at rest. (15 pts) What is the change in potential energy on the system after the m has fallen a distance h? What is the work done by friction on the system?Explanation / Answer
In accordance with chegg policy I am answering the first question, but i will give some hints for the rest.
1. In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. 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.
2.The work a conservative force does on an object in moving it from A to B is path independent - it depends only on the end points of the motion. Examples: the force of gravity and the spring force are conservative forces. For a non-conservative (or dissipative) force, the work done in going from A to B depends on the path taken. Examples: friction and air resistance.
i would suggest you to ask other question as separate question but you can try 3) by using work energy theorem
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