Bonjour guys! There are 6 points on effects of force on an object. you have to explain these points one by one, if possible then pliz explain these points by giving one example too!
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CLASS: 08
CHAPTER: FORCE & PRESSURE.
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Pliz give me the answers which I want!
Thanks in advance! & Best of luck! :)
Answers
Answer:
the first point is not written well
I am improving it
force can make any object move.
Explanation:
See, there's nothing much too explain this I will give you some examples and it will make you understand well
1) If a ball is not moving, it is in rest then you push it a little bit then it starts to move actually you are applying force on the ball
2) same thing but opposite
suppose a ball is moving towards you , then you apply some force on it and stops it with your hands
3) imagine a football is moving towards the goal, but someone is coming towards you to take the ball, then you kick the ball so that its speed increase , there you are using force
4) the bowler in cricket match is throwing a ball towards you, you hit it with ur bat and change it direction
5) when you press the toothpaste in order to take paste from it, you are applying force and changing the shape of it
6 ) everything combination
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(1). Force can cause motion in stationary object.
A book is lying on a table. You can move it by applying a force, i.e., push or pull. Similarly you can apply force to push a chair, move a toy car or move a bicycle or to lift bucket from the floor. In in each case, you move an object at rest by applying a force.
Examples :
1. Force can make a toy move.
2. Force can move a cycle.
3. Force can move a resting chair.
So, we can say force can cause motion in a stationary object (object at rest).
However, it is not necessary that a force always a stationary object move. For example, when you try to push the wall, it will not move. Similarly, when you try to push a tree, it will also not move. The reason is that the force applied by you is not sufficient to move the wall or a tree.
2). Force can stop a moving object
When a football player kick the football towards the goal, the goal keeper applies force to stop the ball. Similarly, when you apply brakes, the moving bicycle stops on its own due to force of friction. A moving ball can stop and come to rest when you apply force with your hands. So, can stop a moving object.
(3). Force can change the direction of motion of moving object.
When a batsman hits ball, the direction of the moving ball changes. Similarly, when a tennis player returns a service, he/she uses force to change the direction of the ball. So, the force can change the direction of the motion of the moving object.
(4). Force can change the Speed of the moving object.
When a person pushes a moving swing, it moves faster and, when he pulls the swing in the opposite direction, it slows down. Similarly, when force is applied on the pedal by a cyclist, speed of the cycle increases. So, force can change the speed of the moving object.
(5). Force can change the shape and size of an object.
When you hold piece of paper or clothes, knead flour or squeeze a tube of paint or toothpaste, you apply force to change shape and size of the object. So, force can change the shape and size of an object.
(6). Force may cause one or more of these effects.
Consider the example of hitting a ball. When a bat strikes the ball, two things happen; The speed of the ball increases and the direction of the ball also get changes. So while striking a ball, more than one effect of force is observed.