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Physics · WORK, ENERGY AND POWER

हिन्दी

A bob suspended by a string executes vertical circular motion. If the string becomes slack exactly at the highest point \( C \) and is simultaneously cut at that very instant, what is the subsequent trajectory of the bob?

  1. It executes a parabolic projectile motion with a horizontal initial velocity
  2. It executes a horizontal circular path
  3. It falls vertically straight downward under gravity
  4. It moves along a straight tangential path indefinitely

Correct answer · Option 1

It executes a parabolic projectile motion with a horizontal initial velocity

Explanation

At point C, the velocity is non-zero and purely horizontal (\( v_c = \sqrt{gL} \)). Under gravity alone without string tension, the bob acts as a horizontally projected particle, describing a parabolic projectile path.
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