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The direction of frictional force acting on a body which can slide on a fixed surface is:
- a)in the direction of motion
- b)normal to the direction of motion
- c)unpredictable
- d)opposite to the direction of motion
Correct answer is option 'D'. Can you explain this answer?
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The direction of frictional force acting on a body which can slide on a fixed surface is opposite to the direction of motion (figure)
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Direction of Frictional Force on a Sliding Body
The correct answer is option 'D' - opposite to the direction of motion.
Explanation:
Frictional force is a force that opposes the relative motion between two surfaces in contact with each other. When an object is sliding on a fixed surface, the direction of frictional force is opposite to the direction of motion. This can be explained by considering the following points:
1. Definition of Friction:
Friction is the force that occurs when two surfaces come in contact with each other and resist the relative motion between them. It acts in a direction that opposes the motion or tendency of motion.
2. Nature of Frictional Force:
Frictional force always acts parallel to the contact surface between two objects. It is caused by the irregularities and interlocking between the surfaces and is dependent on the normal force and the coefficient of friction.
3. Sliding Motion:
When an object is sliding on a fixed surface, there is relative motion between the object and the surface. The object tends to move in a particular direction, and the frictional force acts in the opposite direction to resist this motion.
4. Opposing Motion:
The frictional force opposes the motion of the sliding object by exerting a force in the opposite direction. This helps to prevent the object from sliding too fast or uncontrollably. It provides stability and control over the motion.
5. Newton's Third Law of Motion:
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the object exerts a force on the surface in the direction of motion, the surface exerts an equal and opposite force on the object, which is the frictional force.
Therefore, the direction of the frictional force acting on a body that can slide on a fixed surface is opposite to the direction of motion.
The correct answer is option 'D' - opposite to the direction of motion.
Explanation:
Frictional force is a force that opposes the relative motion between two surfaces in contact with each other. When an object is sliding on a fixed surface, the direction of frictional force is opposite to the direction of motion. This can be explained by considering the following points:
1. Definition of Friction:
Friction is the force that occurs when two surfaces come in contact with each other and resist the relative motion between them. It acts in a direction that opposes the motion or tendency of motion.
2. Nature of Frictional Force:
Frictional force always acts parallel to the contact surface between two objects. It is caused by the irregularities and interlocking between the surfaces and is dependent on the normal force and the coefficient of friction.
3. Sliding Motion:
When an object is sliding on a fixed surface, there is relative motion between the object and the surface. The object tends to move in a particular direction, and the frictional force acts in the opposite direction to resist this motion.
4. Opposing Motion:
The frictional force opposes the motion of the sliding object by exerting a force in the opposite direction. This helps to prevent the object from sliding too fast or uncontrollably. It provides stability and control over the motion.
5. Newton's Third Law of Motion:
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the object exerts a force on the surface in the direction of motion, the surface exerts an equal and opposite force on the object, which is the frictional force.
Therefore, the direction of the frictional force acting on a body that can slide on a fixed surface is opposite to the direction of motion.
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The direction of frictional force acting on a body which can slide on a fixed surface is:a)in the direction of motionb)normal to the direction of motionc)unpredictabled)opposite to the direction of motionCorrect answer is option 'D'. Can you explain this answer?
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