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A 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm−1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision is
  • a)
    0.4 ms−1
  • b)
    4 ms−1
  • c)
    0.8 ms−1
  • d)
    8 ms −1
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A 1.0 kg block collides with a horizontal weightless spring of force c...
Work done on m=change in kinetic energy
⇒ work done by friction and PE energy in spring= Δk.E
⇒ μn(x)+1/2kx2=1/2mv2
⇒ 0.25 x 10 x 4 + 1/2 x 275/100 x 16 = 1/2 x (1) v2
⇒10+22=1/2v2
⇒ 32x2=v2
⇒ 64=v2
⇒ v=8m/s
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A 1.0 kg block collides with a horizontal weightless spring of force c...
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Community Answer
A 1.0 kg block collides with a horizontal weightless spring of force c...
Work done on m=change in kinetic energy
⇒ work done by friction and PE energy in spring= Δk.E
⇒ μn(x)+1/2kx2=1/2mv2
⇒ 0.25 x 10 x 4 + 1/2 x 275/100 x 16 = 1/2 x (1) v2
⇒10+22=1/2v2
⇒ 32x2=v2
⇒ 64=v2
⇒ v=8m/s
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A 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm−1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision isa)0.4 ms−1b)4 ms−1c)0.8 ms−1d)8 ms −1Correct answer is option 'D'. Can you explain this answer?
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A 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm−1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision isa)0.4 ms−1b)4 ms−1c)0.8 ms−1d)8 ms −1Correct answer is option 'D'. 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 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm−1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision isa)0.4 ms−1b)4 ms−1c)0.8 ms−1d)8 ms −1Correct answer is option 'D'. 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 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm−1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision isa)0.4 ms−1b)4 ms−1c)0.8 ms−1d)8 ms −1Correct answer is option 'D'. Can you explain this answer?.
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