Balanced and Unbalanced Force
Balanced and Unbalanced Force
Resultant Force:
The measure of amount or strength of force is called the magnitude of force. many forces may be applied simultaneously on a body. For example
Several people can together can push a box. In this case each person pushes it that is applies some force on it. These forces together produce some acceleration in the box. It is also possible that one strong man pushes the box hard enough to produce the same acceleration in it.
If a single force acting on a body produces the same acceleration as produced by a number of forces, that single force is called the resultant of these individual forces. The resultant force is also called the net force.
Condition when more than two forces are applied over an object:
1. Forces applied in same direction: When more than one force is applied in the same direction, the total force is the sum of magnitude of both the forces.
Illustration: It is difficult to push a car by single person, but two or more persons can collectively push the same car easily.
This is because when more than one person tries to push the car, magnitudes of forces applied by each of the person are summed up and applied over than car, and car is pushed easily because of greater magnitude of force. That means if 3 unit force are applied over an object by each of the two persons,
The total unit of force = sum of both forces = 3 unit + 3 unit = 6 unit.
2. Forces applied in opposite direction: When two forces are applied over an object from opposite directions, the total effective force is the difference of two forces.
Illustration: When two persons are pushing a box in opposite directions and the magnitude of both the forces is equal, then box will not move, because the difference of two forces will be equal to zero.
Let a person applying 4 unit of force in one direction and other person is also applying 4 unit of force in opposite direction on the same wooden box.
Therefore, the magnitude of total force = 4 unit – 4 unit = 0.
Balanced and Unbalanced Forces:
When the net effect produced by number of forces acting on a body is zero, then the forces are said to be balanced forces. If the two forces balance each other, they must be in opposite direction and have equal magnitude. For e.g., In a tug or war, when both the teams apply similar force from either sides, rope does not move, that is the resultant force is zero. Hence, it’s a balanced force.
When the net effect produced by a number of forces acting on a body is non-zero, then the forces are said to be unbalanced forces. For e.g., a boy pushes the refrigerator with a small force, the refrigerator does not move due to friction force acting in opposite direction to the push. If he pushes harder, the pushing force becomes bigger than friction force; the refrigerator starts moving in the direction of push.
External forces | |||
| Right Option : C | |||
| View Explanation |
Which of the following are correct ? (a) The measure of amount or strength of force is called the magnitude of force. (b) If a set of forces acting on a body produces no acceleration in it, the forces are said to be balanced. (c) If a set of forces acting on a body produces a nonzero acceleration, the forces are said to be unbalanced. | |||
| Right Option : A | |||
| View Explanation | |||
If the two forces applied to an object are equal and act in opposite directions, the net force acting on the object will be__________ . | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
