A large block of wood of mass M=5.99kg is hanging from two long massless cords. A bullet of mass m=10g is fired into the block and gets embedded in it. The (block + bullet) then swing upwards, their center of mass rising a vertical distance h=9.8cm before the (block + bullet) pendulum comes momentarily to rest at the end of its arc. The speed of the bullet just before the collision is: (Take g=9.8ms−2)
Held on 16 Mar 2021 · Verified 6 Jul 2026.
841.4ms−1
811.4ms−1
831.4ms−1
821.4ms−1
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