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AP EAMCET20225 Jul 2022Evening ShiftPhysicsMotion in Two DimensionsActual

An object of mass 3 ~kg is tied by a string of negligible mass to a ceiling and held such that the string is taut. The object is released suddenly such that the string remains taut. It's acceleration when released is (acceleration due to gravity =10 ~ms ⁻² )

Options

  1. A3.5 ~ms ⁻²
  2. B4.9 ~ms ⁻²
  3. C7.5 ~ms ⁻²
  4. D6.9 ~ms ⁻²

Correct answer

B. 4.9 ~ms ⁻²

Step-by-step solution

When object is released, net force acting on it is mg 30^ as shown, because T = mg 30^ So, a = mg 30^ m = g 30^ =4.9 ~m / s ^2

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