After the completion of this lesson, students will be able to:
1. understand the concept of force and its effects.
2. differentiate thrust and pressure.
3. understand the characteristics of atmospheric and liquid pressure.
4. apply pascal’s law in day to day life.
5. understand the applications of surface tension and viscosity.
6. analyse friction in rest and motion.
7. know about the ways of increasing and decreasing friction.
8. solve numerical problems related to force and pressure.

__UNIT 2__

__FORCE
AND PRESSURE__

** **

**Learning Objectives**

After the completion of this lesson, students will be able to:

1. understand the concept of force and its effects.

2. differentiate thrust and pressure.

3. understand the characteristics of atmospheric and liquid
pressure.

4. apply pascal’s law in day to day life.

5. understand the applications of surface tension and viscosity.

6. analyse friction in rest and motion.

7. know about the ways of increasing and decreasing friction.

8. solve numerical problems related to force and pressure.

**Introduction**

We
see many objects in our daily life. Some of them are moving and some of them
are at rest. A ball at rest, moves when it is kicked. Similarly when we push or
pull objects which are at rest, they begin to move. This push or pull is called
force. A force acting in a particular area, produces pressure. For example when
we fasten a nail on the wall, pressure is exerted. Not only solids, gases and
liquids also exert pressure. Pressure exerted by liquids and gases finds
application in different fields.

Hydraulic
lift and hydraulic break are working due to liquid pressure. In this lesson you
will study about force and pressure. You will also study about surface tension
viscosity and friction.

** **

Tags : Chapter 2 | 8th Science , 8th Science : Chapter 2 : Force and Pressure

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8th Science : Chapter 2 : Force and Pressure : Force and Pressure | Chapter 2 | 8th Science

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