Match the statements in Column A and Column B. S.No Column A S.No Column B 1. A force which does not need a connector. (a) pascal 2. Force required to raise 100 g mass, vertically upward against gravity. (b) Push 3. A force which cannot be applied through a non- rigid connector. (c) Fluid 4. SI unit of pressure. (d) 100 kPa 5. Approximate pressure exerted by air. (e) Non-contact force 6. Common name for liquids and gases. (f) newton

A force that does not need a connector - Non contact force. A non-contact force is one that works on an object without actually coming into touch with it. Gravity, which provides weight, is the most well-known non-contact force. A contact force, on the other hand, is a force that acts on an object that comes into actual touch with it. The force required to raise 100 g mass, vertically upward against gravity - newton. The unit of force in the meter-kilogram-second system equal to the force required to impart an acceleration of one meter per second to a mass of one kilogram. A force which cannot be applied through a non-rigid connector - Push. A push is a force that causes an object to move from its resting position. When you push anything, it tends to move away from you. Push force is demonstrated by kicking a ball, closing a door, pushing a trolley, and inserting a plug into a socket. SI unit of pressure - pascal. The SI unit of pressure is pascal which is equal to one newton per square metre. Approximate pressure exerted by air - 100 k Pa . The atmospheric air exerts a force on all the objects in the atmosphere and on the earth. The force or thrust exerted by the atmospheric air on a unit area is defined as atmospheric pressure. Common name for liquids and gases - Fluids. A fluid is any substance that is able to flow. Column A Column B 1. A force which does not need a connector. (a) Non-contact force 2. Force required to raise 100 g mass, vertically upward against gravity. (b) newton 3. A force which cannot be applied through a non-rigid connector. (c) push 4. SI unit of pressure. (d) pascal 5. Approximate pressure exerted by air. (e) 100 k Pa 6. Common name for liquids and gases. (f) Fluid

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Learning Elementary Science with Online Support>Chapter 11 - Force and Pressure>EXERCISES>Q IV

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A cyclist exerts a force of pull on the paddles of a bicycle.

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Important Questions on Force and Pressure

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Learning Elementary Science with Online Support>Chapter 11 - Force and Pressure>EXERCISES>Q IV

When a body falls freely, it is acted upon by the force of gravity.

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Learning Elementary Science with Online Support>Chapter 11 - Force and Pressure>EXERCISES>Q IV

A boatman exerts a force of the push, in rowing a boat.

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Learning Elementary Science with Online Support>Chapter 11 - Force and Pressure>EXERCISES>Q V

Match the statements in Column A and Column B.

S.No	Column A	S.No	Column B
1.	A force which does not need a connector.	(a)	pascal
2.	Force required to raise $100 g$ mass, vertically upward against gravity.	(b)	Push
3.	A force which cannot be applied through a non- rigid connector.	(c)	Fluid
4.	SI unit of pressure.	(d)	$100 kPa$
5.	Approximate pressure exerted by air.	(e)	Non-contact force
6.	Common name for liquids and gases.	(f)	newton