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A rod of mass 'm and length L is attache...

A rod of mass 'm and length L is attached to a L shaped plank at 'A'. rod can move freely about A. A string is tied between rod and plank as shown in figure. Whole system is moving with a constant acceleration g in x-direction

Tension in the string is :

A

zero

B

2mg

C

mg/2

D

mg

Text Solution

Verified by Experts

Torque about 'A'
`(mgl)/2-Tl=0`
`T=(mg)/2` newton
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