Class 8 Exam > Class 8 Questions > Which of the following is characteristic of f...
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Which of the following is characteristic of friction?
- a)It is a non-contact force
- b)It works on only resting body
- c)It works opposite to direction of motion
- d)It can change the direction of motion
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following is characteristic of friction?a)It is a non-con...
Friction always works opposite to direction of motion. A moving ball slows down due to frictional force working opposite to direction of motion.
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Which of the following is characteristic of friction?a)It is a non-con...
Friction Characteristics
- Friction works opposite to direction of motion: Friction is a force that opposes the motion of an object. When an object is in motion, the force of friction acts in the opposite direction to the motion of the object. This is why it is harder to push something heavy across the floor than something light, as the friction force is greater.
- Friction is not a non-contact force: Unlike forces like gravity or magnetic force, friction is a contact force. It occurs when two surfaces come into contact with each other and resist the relative motion between them. For example, when you rub your hands together, friction is the force that resists the motion of your hands sliding past each other.
- Friction can change the direction of motion: While friction always opposes the motion of an object, it can also cause a change in the direction of motion. For example, when a car goes around a curve, the friction between the tires and the road helps the car change its direction by providing the necessary centripetal force.
In conclusion, the characteristic of friction that is mentioned in the question is that it works opposite to the direction of motion. This fundamental property of friction is essential in understanding how objects interact with each other and their environment.
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Which of the following is characteristic of friction?a)It is a non-contact forceb)It works on only resting bodyc)It works opposite to direction of motiond)It can change the direction of motionCorrect answer is option 'C'. Can you explain this answer?
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