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A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is
- a)straight line parallel to F-axis
- b)straight line inclined at 45o
- c)straight line inclined at 45o for small values of F and straight line parallel to F-axis for large F
- d)none of these
Correct answer is option 'C'. Can you explain this answer?
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A block is placed on a rough surface and an external horizontal force ...
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A block is placed on a rough surface and an external horizontal force ...
Explanation:
The force of friction f exerted by the floor on the block is measured for different values of F. The graph between F and f is given below.
The relationship between F and f can be explained by the following two cases:
Case 1: When F is small
When F is small, the force of friction f is equal to the product of the coefficient of static friction and the normal force between the block and the surface. Therefore, f ∝ N. As the normal force N is equal to the weight of the block, which is constant, the force of friction f is also constant and independent of the applied force F. Hence, the graph between F and f is a straight line parallel to the F-axis.
Case 2: When F is large
When F is large, the force of friction f is equal to the product of the coefficient of kinetic friction and the normal force between the block and the surface. Therefore, f ∝ N. As the normal force N is equal to the weight of the block, which is constant, the force of friction f is also constant and independent of the applied force F. Hence, the graph between F and f is a straight line parallel to the F-axis.
Therefore, the graph between F and f is a straight line inclined at 45o for small values of F and a straight line parallel to the F-axis for large F. This is because the force of friction changes from static friction to kinetic friction as the applied force increases beyond a certain value (known as the limiting friction). At the limiting friction, the block just begins to move, and the force of friction becomes kinetic friction.
The force of friction f exerted by the floor on the block is measured for different values of F. The graph between F and f is given below.
The relationship between F and f can be explained by the following two cases:
Case 1: When F is small
When F is small, the force of friction f is equal to the product of the coefficient of static friction and the normal force between the block and the surface. Therefore, f ∝ N. As the normal force N is equal to the weight of the block, which is constant, the force of friction f is also constant and independent of the applied force F. Hence, the graph between F and f is a straight line parallel to the F-axis.
Case 2: When F is large
When F is large, the force of friction f is equal to the product of the coefficient of kinetic friction and the normal force between the block and the surface. Therefore, f ∝ N. As the normal force N is equal to the weight of the block, which is constant, the force of friction f is also constant and independent of the applied force F. Hence, the graph between F and f is a straight line parallel to the F-axis.
Therefore, the graph between F and f is a straight line inclined at 45o for small values of F and a straight line parallel to the F-axis for large F. This is because the force of friction changes from static friction to kinetic friction as the applied force increases beyond a certain value (known as the limiting friction). At the limiting friction, the block just begins to move, and the force of friction becomes kinetic friction.
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A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer?
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A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer?.
A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer?.
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ample number of questions to practice A block is placed on a rough surface and an external horizontal force F is applied on it. The force of friction ‘f’ exerted by the floor on the block is measured for different values of F. The graph between F and f is a)straight line parallel to F-axis b)straight line inclined at 45oc)straight line inclined at 45o for small values of F and straight line parallel toF-axis for large Fd)none of theseCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 11 tests.
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