Effects of Force


 
 
Concept Explanation
 

Effects of Force

A force cannot be seen. It can be judged by the following effects:

  • Force can make an object move from its position of rest: For example, pushing any person will make he/she fall down, to pluck an apple from the tree we pull the apple towards us.
  • Force can stop or slow down the moving objects: Applying brakes on a moving car will slow down its speed or the car can be stopped. A ball is topped by a player by applying force in opposite direction.
  • Force can make a moving object move faster: Applying force won the paddles of a moving bicycle, will move the cycle faster.
  • Force can bring change in direction of moving objects: In football matches, a player applies force in the football to change its direction. A force can change the direction of a moving car. In the game of carom, when we take a rebound (spring back) then the direction of striker changes. This is because the edge of the carom board exerts a force on the striker.
  • Force can change the shape and size of objects: Force applied by the women changes the shape of the dough (kneaded flour) into round chapattis. When we squeeze toothpaste tube to take out toothpaste, its shape changes. When you apply force on an inflated balloon, using your hand from both sides, the force of pressure changes the shape of balloon. A blacksmith changes the shape of an iron rod by applying force using a hammer. When a rubber band is stretched in opposite directions, its shape is changed.
  • Forces are due an interaction: To apply a force over an object interaction between object and source of force is necessary. Example: To open a drawer one has to pull by holding it, drawer will not open otherwise. To kick a ball one has to touch it, otherwise force will not be applied over the ball.

    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Which of the following is NOT attributable to application of force ?

    Right Option : B
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    Explanation
    Question : 2

    An object is said to be at equilibrium if

    Right Option : D
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    Explanation
    Question : 3

    Force can effect the state of motion of a body by:

    Right Option : D
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    Explanation
     
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