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During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.
- a)True
- b)False
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
During rolling, the force of friction acts in the same direction as th...
When a body rolls, the force if the friction acts in the same direction as the direction of motion of the centre of mass of the body.
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During rolling, the force of friction acts in the same direction as th...
Understanding Rolling Motion
Rolling motion occurs when an object rotates about an axis while simultaneously translating along a surface. This type of motion is commonly observed in wheels, balls, and cylinders.
The Role of Friction in Rolling
- In rolling motion, the point of contact between the rolling object and the surface does not slide; rather, it is momentarily at rest.
- The force of friction is essential in ensuring that the object rolls without slipping. This frictional force provides the necessary torque for the object to rotate.
Direction of Frictional Force
- In the case of rolling, the frictional force acts in the direction that aids the motion of the center of mass of the body.
- When a rolling object moves forward, friction acts forward, enhancing its translational motion.
Example for Clarity
- Consider a ball rolling down an inclined plane. The frictional force at the contact point acts in the direction of the ball's movement, facilitating both rotation and translation without slipping.
Conclusion
- Therefore, the statement that "the force of friction acts in the same direction as the direction of motion of the center of mass of the body" is indeed true.
- This unique characteristic of friction in rolling is crucial for the efficiency and stability of rolling bodies.
Understanding these dynamics helps in various applications in mechanical engineering, ensuring designs that optimize performance through effective use of rolling motion.
Rolling motion occurs when an object rotates about an axis while simultaneously translating along a surface. This type of motion is commonly observed in wheels, balls, and cylinders.
The Role of Friction in Rolling
- In rolling motion, the point of contact between the rolling object and the surface does not slide; rather, it is momentarily at rest.
- The force of friction is essential in ensuring that the object rolls without slipping. This frictional force provides the necessary torque for the object to rotate.
Direction of Frictional Force
- In the case of rolling, the frictional force acts in the direction that aids the motion of the center of mass of the body.
- When a rolling object moves forward, friction acts forward, enhancing its translational motion.
Example for Clarity
- Consider a ball rolling down an inclined plane. The frictional force at the contact point acts in the direction of the ball's movement, facilitating both rotation and translation without slipping.
Conclusion
- Therefore, the statement that "the force of friction acts in the same direction as the direction of motion of the center of mass of the body" is indeed true.
- This unique characteristic of friction in rolling is crucial for the efficiency and stability of rolling bodies.
Understanding these dynamics helps in various applications in mechanical engineering, ensuring designs that optimize performance through effective use of rolling motion.
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During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.a)Trueb)FalseCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.a)Trueb)FalseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.a)Trueb)FalseCorrect answer is option 'A'. Can you explain this answer?.
During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.a)Trueb)FalseCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.a)Trueb)FalseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for During rolling, the force of friction acts in the same direction as the direction of motion of the centre of mass of the body.a)Trueb)FalseCorrect answer is option 'A'. Can you explain this answer?.
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