Science

Force and Pressure


Forces are due to an Interaction


Suppose a man is standing behind a stationary car. Will the car move due to his presence? Suppose the man now begins to push the car, that is, he applies a force on it. The car may begin to move in the direction of the applied force. Note that the man has to push the car to make it move. shows three situations that may be familiar to you. Can you decide who is pulling and who is pushing in these cases? In both the girls appear to push each other while the pair of girls in are trying to pull each other. Similarly, the cow and the man in appear to pull each other. The girls in the two situations shown here are applying force on each other. Is it also true for the man and the cow? From these examples, we can infer that at least two objects must interact for a force to come into play. Thus, an interaction of one object with another object results in a force between the two objects.

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Notes


Force and Pressure - Notes
1. Atmospheric Pressure
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2. Force - A Push or a Pull
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3. Gravitational Force
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4. Electrostatic Force
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5. Contact Forces (Muscular Force)
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6. Pressure
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7. Forces are due to an Interaction
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8. A Force can Change the State of Motion
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