# Work, Energy, and Simple Machines Important Questions and Practice Set with Answers | NCERT Class 9 Science | SwaVid

This chapter introduces the fundamental concepts of work, energy, and power, which are crucial for understanding the physical world around us. It delves...

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# Work, Energy, and Simple Machines

## A force of 10 N acts on an object, but the object does not move. What is the work done by the force?

## Find the gaps before this chapter finds them for you.

## Related chapters

Chapter 7 · Class 9 Science

This chapter introduces the fundamental concepts of work, energy, and power, which are crucial for understanding the physical world around us. It delves into the scientific definition of work, distinguishing it from its everyday usage, and explores various forms of energy, including kinetic and potential energy. The chapter also covers the law of conservation of energy, illustrating how energy transforms from one form to another. Furthermore, it introduces the principles of simple machines, explaining how they help us do work more easily by changing the direction or magnitude of force, and discusses concepts like mechanical advantage and efficiency.

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Multiple Choice Questions · 1 / 15

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- NCERT Class 9 Science textbook: Exploration : Chapter 7: Work, Energy, and Simple Machines

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