Introduction to Work

The work done by the conservative force for a closed path is ______

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then, the long piece will have a force constant of ______

Explain how the definition of work in physics is different from general perception.

Explain with graphs the difference between work done by a constant force and by a variable force.

State and explain the work-energy principle. Mention any three examples for it.

Calculate the work done by a force of 30 N in lifting a load of 2kg to a height of 10 m (g = 10 m s⁻²)