CM rises through height h, so its velocity after collision =2gh
Apply conservation of linear momentum.
0.01×400=2×2gh+0.01×v
⇒v=120m/s
NEET UG 2016 — Physics Mechanics
A bullet of mass 10g moving horizontally with a velocity of 400ms−1 strikes a wooden block of mass 2kg which is suspended by a light inextensible string of length 5m. As a result, the centre of gravity of the block is found to rise a vertical distance of 10cm. The speed of the bullet after it emerges out horizontally from the block will be
Held on 30 Apr 2016 · Verified 9 Jul 2026.
100ms−1
80ms−1
120ms−1
160ms−1
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