B. Fill in the blanks.
1. Force acting on a body can change its
and
2. The SI unit of force is
3. is used for measuring the weight of an object.
4. Pressure is defined as per unit
5. In liquids, pressure acts in directions and pressure as the depth increases.
Answers
1 speed and direction
2 Newton
3 spring balance
4 the physical force exerted on an object
B. Fill in the blanks.
1. Force acting on a body can change its speed and direction.
2. The SI unit of force is newton ( N ).
3. Spring Balance is used for measuring the weight of an object.
4. Pressure is defined as normal force acting per unit area.
5. In liquids, pressure acts in all directions and pressure increases as the depth increases.
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.