# A bullet of mass  is fired with a velocity of 50  at an angle  with the horizontal. At the highest point of its trajectory, it collides had on with a bob of massless string of length m and gets embedded in the bob. After the collision, the string moves to an angle of 120 . What is the angle a) b) c) d)

## Question ID - 53939 :- A bullet of mass  is fired with a velocity of 50  at an angle  with the horizontal. At the highest point of its trajectory, it collides had on with a bob of massless string of length m and gets embedded in the bob. After the collision, the string moves to an angle of 120 . What is the angle a) b) c) d)

3537

(a)

Velocity of bullet at highest point of its trajectory = 50  in horizontal direction.

As bullet of mass  collides with pendulum bob of mass 3  and two stick together, their common velocity

As now under this velocity  pendulum bob goes up to an angel 120 , hence

or

Comparing two answer of , we get

or

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