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A ladder AB is supported by a smooth vertical wall and rough horizontal floor as shown. A boy starts moving from A to B slowly. The ladder remains at rest, then pick up the correct statement(s).
  • a)
    Magnitude of normal reaction by floor on ladder at point A will remain unchanged 
  • b)
    Magnitude of normal reaction by wall on ladder at point B will decrease 
  • c)
    Magnitude of friction force by floor on ladder at point A will increase 
  • d)
    Magnitude of normal reaction by wall on ladder at point B will increase. 
Correct answer is option 'A,C,D'. Can you explain this answer?
Verified Answer
A ladderABis supported by a smooth vertical wall and rough horizontal ...
Let m and M be mass of man and ladder. From FBD normal reaction at A is N1 = (m + M)g which remains constant. Net torque on man + ladder is zero about B. If x decreases then torque of m about B will decrease.
Hence f must increases.
The correct answers are: Magnitude of normal reaction by wall on ladder at point B will increase., Magnitude of normal reaction by floor on ladder at point A will remain unchanged, Magnitude of friction force by floor on ladder at point A will increase
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Most Upvoted Answer
A ladderABis supported by a smooth vertical wall and rough horizontal ...
Let m and M be mass of man and ladder. From FBD normal reaction at A is N1 = (m + M)g which remains constant. Net torque on man + ladder is zero about B. If x decreases then torque of m about B will decrease.
Hence f must increases.
The correct answers are: Magnitude of normal reaction by wall on ladder at point B will increase., Magnitude of normal reaction by floor on ladder at point A will remain unchanged, Magnitude of friction force by floor on ladder at point A will increase
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A ladderABis supported by a smooth vertical wall and rough horizontal floor as shown. A boy starts moving fromAtoBslowly. The ladder remains at rest, then pick up the correct statement(s).a)Magnitude of normal reaction by floor on ladder at pointAwill remain unchangedb)Magnitude of normal reaction by wall on ladder at pointBwill decreasec)Magnitude of friction force by floor on ladder at pointAwill increased)Magnitude of normal reaction by wall on ladder at pointBwill increase.Correct answer is option 'A,C,D'. Can you explain this answer?
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A ladderABis supported by a smooth vertical wall and rough horizontal floor as shown. A boy starts moving fromAtoBslowly. The ladder remains at rest, then pick up the correct statement(s).a)Magnitude of normal reaction by floor on ladder at pointAwill remain unchangedb)Magnitude of normal reaction by wall on ladder at pointBwill decreasec)Magnitude of friction force by floor on ladder at pointAwill increased)Magnitude of normal reaction by wall on ladder at pointBwill increase.Correct answer is option 'A,C,D'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about A ladderABis supported by a smooth vertical wall and rough horizontal floor as shown. A boy starts moving fromAtoBslowly. The ladder remains at rest, then pick up the correct statement(s).a)Magnitude of normal reaction by floor on ladder at pointAwill remain unchangedb)Magnitude of normal reaction by wall on ladder at pointBwill decreasec)Magnitude of friction force by floor on ladder at pointAwill increased)Magnitude of normal reaction by wall on ladder at pointBwill increase.Correct answer is option 'A,C,D'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A ladderABis supported by a smooth vertical wall and rough horizontal floor as shown. A boy starts moving fromAtoBslowly. The ladder remains at rest, then pick up the correct statement(s).a)Magnitude of normal reaction by floor on ladder at pointAwill remain unchangedb)Magnitude of normal reaction by wall on ladder at pointBwill decreasec)Magnitude of friction force by floor on ladder at pointAwill increased)Magnitude of normal reaction by wall on ladder at pointBwill increase.Correct answer is option 'A,C,D'. Can you explain this answer?.
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