Work Energy Principle.pptx

There is a brief description about Work Energy Principle and it's application on connected bodies.

1. Work Energy Principle and its application on connected bodies

2. Presented by Nayel Biswas(34900721019) K Dhanraj Rao(34900721016) Mechanical Engineering,2 nd Year, 3 rd Sem

3. Topics Work done, Conservative and Non-conservative force Work Energy Theorem(KE) Its example Work Energy Theorem(PE) Its example Numericals related to Work Energy Theorem

4. Work :- The work done by a force can be defined as the product of the displacement covered by an object when the force applied on it. Conservative force :- A force said to be conservative when total work done in moving a particle between two points is independent of the path taken by particle. Such as gravitational force Non conservative force :- The work done by that force depends on the path taken between the initial and final positions of the particle. Example:- Frictional Force dW = F . ds

5. Work Energy Theorem(KE) The work done by the force acting on a particle during its displacement is equal to change in kinetic energy in that displacement. Work Done = Change in Kinetic Energy

6. Work Energy Theorem(PE) Work done by conservative force acting on a particle during its displacement is equal to change in potential energy in that displacement. Work Done = Change in Potential Energy

7. Q: Two blocks are joined by an inextensible cable as shown. If the system is released from rest, determine the velocity of block A after it has moved 2m, Assume that the coefficient of kinetic friction between block A and the plane is 0.25 and that the pully is Weightless and frictionless.

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9. Q: A body weighing 300 N is pushed up a 30 Degree plane by a 400 N force acting parallal to the plane. If the initial velocity of the body is 1.5 m/s and coefficient of kinetic friction is μ = 0.2,what velocity will the body have after moving 6 m

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