Question

State the effect produced by a force in the following cases:
1. The sling of a rubber catapult is stretched
2. A man pushes a heavy cart
3. A player uses his stick to deflect the ball
4. A cyclist applies brakes
5. A spring is compressed

Answer 1

Hint: We know that the force applied on any object makes certain physical and visible changes. There are many daily life examples which relate the laws of motion. These laws of motion will help us to find the reason for the above question.

Complete step-by-step answer:
1. The shape of a rubber catapult changes when it is stretched. Thereby, increasing the length of the rubber catapult.
2. When a man pushes the heavy cart, the cart starts to move. This is an example of the first law of motion, which states that an object continues to be in rest or in motion in a particular direction until and unless any external force is applied on it.
3. When a player uses his stick to deflect the ball, the direction of the ball changes. This is also an example of the first law of motion.
4. When a cyclist applies brakes, the speed of the cycle slows down or stops. This is an example of the first law of motion.
5. When a spring is compressed i.e., applied force on the string, it will change the size and shape of the string.

Additional Information: In very simple context- any push or pull is called force. There are three laws of motions given by Newton. These laws of motion relate an object's motion to the forces acting on it.
First law of motion states that an object continues to be in rest or in motion in a particular direction until and unless any external force is applied on it.
In the second law of motion, the force on an object is equal to its mass times its acceleration. This law also gives the relation of momentum and force.
In the third law of motion, every action has an equal and opposite reaction.

Note: Force applied on an object changes its motion, speed, direction and also its shape. There is a very small difference between the force applied and the pressure applied on an object. Pressure is always given as the force per unit area.