Astronaut
Time to Answer
Fill in the blanks.
(a)
is the force acting per unit area.
( With the increase in area of contact
, the pressure
(d) The pressure exerted by liquids
with depth
(e) The pressure exerted by atmosphere on objects is called
Force and Pressure
(b) The SI unit of pressure is
Answers
Pressure is the force acting per unit area. (With the increase in area of contact, the pressure decreases)
The pressure exerted by liquids increases with depth.
The pressure exerted by atmosphere on objects is called atmospheric pressure.
The SI unit of pressure is N/m^2 (Pascal)
Fill in the blanks:
Pressure is the force acting per unit area.
( With the increase in area of contact, the pressure decreases.
As pressure = Force/Surface Area
The pressure exerted by liquids increases with depth.
The pressure exerted by atmosphere on objects is called atmospheric pressure.
Force and Pressure are directly proportional to each other.
(b) The SI unit of pressure is newton per square metre ( N/m² ).
Assimilate More:-
The force cannot be seen or felt but can be explained on the basis of effects caused by it.
Force as that external push or pull acting on an object which changes or tends to change the state of rest for the state of uniform linear motion of an object. A force may also deform an object.
Pressure:-
Force acting normally on a unit surface area is called pressure. Liquid and gases exert pressure in all directions.
Turning effect of force:-
A force is associated with translation motion in which an object moves as a whole along a given path. However, under suitable conditions, A force can turn an object about a given axis. This is known as turning effect of force.
Example:-
♦ When you apply force on the handle of a door, the door turns around the hinges.
♦ When a driver applies a force on the steering wheel of his car, it causes turning effect on the wheel.
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