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A small block of mass M moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly changes from 60° to 30° at point B. The block is initially at rest at A. Assume that collisions between the block and the incline are totally inelastic (g = 10 m/s2).
Q.2. The speed of the block at point C, immediately before it leaves the second incline is
  • a)
    √120 m/s
  • b)
    √105 m/s
  • c)
    √90 m/s
  • d)
    √75 m/s
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A small block of mass M moves on a frictionless surface of an inclined...
Applying mechanical energy conservation .
Mechanical energy at B = Mechanical energy at C
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A small block of mass M moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly changes from 60° to 30° at point B. The block is initially at rest at A. Assume that collisions between the block and the incline are totally inelastic (g = 10 m/s2).Q.2.The speed of the block at point C, immediately before it leaves the second incline isa)√120 m/sb)√105 m/sc)√90 m/sd)√75 m/sCorrect answer is option 'B'. Can you explain this answer?
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A small block of mass M moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly changes from 60° to 30° at point B. The block is initially at rest at A. Assume that collisions between the block and the incline are totally inelastic (g = 10 m/s2).Q.2.The speed of the block at point C, immediately before it leaves the second incline isa)√120 m/sb)√105 m/sc)√90 m/sd)√75 m/sCorrect 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 moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly changes from 60° to 30° at point B. The block is initially at rest at A. Assume that collisions between the block and the incline are totally inelastic (g = 10 m/s2).Q.2.The speed of the block at point C, immediately before it leaves the second incline isa)√120 m/sb)√105 m/sc)√90 m/sd)√75 m/sCorrect 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 moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly changes from 60° to 30° at point B. The block is initially at rest at A. Assume that collisions between the block and the incline are totally inelastic (g = 10 m/s2).Q.2.The speed of the block at point C, immediately before it leaves the second incline isa)√120 m/sb)√105 m/sc)√90 m/sd)√75 m/sCorrect answer is option 'B'. Can you explain this answer?.
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