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 60anddeg; to 30anddeg; 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.1.The speed of the block at point B immediately after it strikes the second incline is andndash;a)b)c)d)Correct answer is option 'B'. Can you explain this answer?

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Q.1. The speed of the block at point B immediately after it strikes the second incline is –

Correct 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...

As the inclined plane is frictionless, The K. E . at B = P.E. at A

Δh = 3 m

This is the velocity of the block just before collision.
This velocity makes an angle of 30° with the vertical.

Also in right angled triangle BEC, ∠EBC= 60°.
Therefore v makes an angle of 30° with the second inclined plane BC. The component of v along BC is v cos 30°.

It is given that the collision at B is perfectly inelastic therefore the impact forces act normal to the plane such that the vertical component of velocity becomes zero.
The component of velocity along the incline BC remains unchanged and is equal to v cos 30°

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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.1.The speed of the block at point B immediately after it strikes the second incline is –a)b)c)d)Correct 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.1.The speed of the block at point B immediately after it strikes the second incline is –a)b)c)d)Correct 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.1.The speed of the block at point B immediately after it strikes the second incline is –a)b)c)d)Correct 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.1.The speed of the block at point B immediately after it strikes the second incline is –a)b)c)d)Correct answer is option 'B'. Can you explain this answer?.

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