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Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)
  • a)
    VA = 4 m/sec, VB = 3 m/sec
  • b)
    VA = 2 m/sec, VB = -6 m/sec
  • c)
    VA = 2 m/sec, VB = -3 m/sec
  • d)
    VA = -3 m/sec, VB = 2 m/sec
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on...
Before release, the total momentum was zero because of rest condition. From the conversation of momentum, we can write
When spring is stretched, it has energy and when it is unstretched, all its energy is transferred to both blocks. Therefore,
Substituting the value of vA from equation (1), we get:
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Most Upvoted Answer
Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on...
Before release, the total momentum was zero because of rest condition. From the conversation of momentum, we can write
When spring is stretched, it has energy and when it is unstretched, all its energy is transferred to both blocks. Therefore,
Substituting the value of vA from equation (1), we get:
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Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer?
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Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE). Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
Here you can find the meaning of Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Blocks A and B of masses 40 kg and 60 kg, respectively, are placed on a smooth surface, as shown in the figure and the spring connected between them is stretched to a distance of 2 m. If they are released from rest, the speeds of both the blocks at the instant at which the spring becomes unstretched are (Take k = 150 N/m)a)VA = 4 m/sec, VB = 3 m/secb)VA = 2 m/sec, VB = -6 m/secc)VA = 2 m/sec, VB = -3 m/secd)VA = -3 m/sec, VB = 2 m/secCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
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