Overview Physics Laws of Motion Physics Class 11th

Shown in figure is a block at rest having an inclined smooth groove in vertical plane. The horizontal surface is smooth. A ball of same mass as that of block at rest is released from top end. The time when ball will leave groove is √(nL/(2g√3)). Find n.

9 Views | Posted 3 weeks ago

1 Answer

Answered by

Vishal Baghel | Contributor-Level 10

3 weeks ago

-mv cos 60? + 2mu = 0 => v = 4u
½m [v² + u² + 2uv cos 120? ] + ½mu² = mgx sin 60?
=> v² = (8/7)√3gx => ar = (4√3/7)g
∴ t = √ (2L × 7)/ (4√3g)

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