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A small block of mass m is fixed at upper end of a massless vertical spring of spring constant K =   and natural length '10L'. The lower end of spring is free and is at a height L from fixed horizontal floor as shown. The spring is initially unstressed and the spring-block system is released from rest in the shown position.
   
Q. At the instant speed of block is maximum, the magnitude of force exerted by spring on the block is :
  • a)
    mg/2
  • b)
    mg
  • c)
    Zero
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A small block of mass m is fixed at upper end of a massless vertical s...
When speed of block is maximum, net force on block is zero. Hence at that instant spring exerts a force of magnitude 'mg' on block.
 
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A small block of mass m is fixed at upper end of a massless vertical spring of spring constant K = and natural length 10L. The lower end of spring is free and is at a height L from fixed horizontal floor as shown. The spring is initially unstressedand the spring-block system is released from rest in the shown position. Q. At the instant speed of block is maximum, the magnitude of force exerted by spring on the block is :a)mg/2b)mgc)Zerod)None of theseCorrect answer is option 'B'. Can you explain this answer?
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A small block of mass m is fixed at upper end of a massless vertical spring of spring constant K = and natural length 10L. The lower end of spring is free and is at a height L from fixed horizontal floor as shown. The spring is initially unstressedand the spring-block system is released from rest in the shown position. Q. At the instant speed of block is maximum, the magnitude of force exerted by spring on the block is :a)mg/2b)mgc)Zerod)None of theseCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A small block of mass m is fixed at upper end of a massless vertical spring of spring constant K = and natural length 10L. The lower end of spring is free and is at a height L from fixed horizontal floor as shown. The spring is initially unstressedand the spring-block system is released from rest in the shown position. Q. At the instant speed of block is maximum, the magnitude of force exerted by spring on the block is :a)mg/2b)mgc)Zerod)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A small block of mass m is fixed at upper end of a massless vertical spring of spring constant K = and natural length 10L. The lower end of spring is free and is at a height L from fixed horizontal floor as shown. The spring is initially unstressedand the spring-block system is released from rest in the shown position. Q. At the instant speed of block is maximum, the magnitude of force exerted by spring on the block is :a)mg/2b)mgc)Zerod)None of theseCorrect answer is option 'B'. Can you explain this answer?.
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