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Question: A meter stick is held vertically with one end on the floor and is then allowed to fall. The speed of...

A meter stick is held vertically with one end on the floor and is then allowed to fall. The speed of the other end when it hits the floor assuming that the end of the stick does not slip and g = 9.8 m/s2 –

A

3.2 m/s

B

5.4 m/s

C

7.8 m/s

D

9.2 m/s

Answer

5.4 m/s

Explanation

Solution

Loss in P.E. = gain in KE

mg (L2)\left( \frac{L}{2} \right)= 12\frac{1}{2}I (VL)2\left( \frac{V}{L} \right)^{2}