Define the term work. State the conditions that need to be satisfied for work to be done. Give some situations in which work is done....
Answers
Answer:
w=sf
Explanation:
w - stands for work
s - stands for displacement
f - stands for force
work is the product of force and displacement.
the object should have some mass and it should displace to do a work.
Answer:
1. Work is said to be done when a force causes a displacement. It is a scalar quantity that is mathematically given by the scalar product of the applied force and displacement caused. Joule is the SI unit of work. ... When F and S are parallel, θ = 0.
2. Two conditions need to be satisfied for work to be done:
- Force should act on the object.
- Object must be displaced.
3. As the porter carries the load by lifting it upwards and the moving forward it is obvious the angle between the force applied by the porter and the displacement is 90o. Work done is zero when displacement is zero. This happens when a man pushes a wall. There is no displacement of the wall.