Physics - NLM Question with Solution | TestHub

PhysicsNLMSimple Application of NLMMedium2 minPYQ_2015
PhysicsMediumsingle choice

A rod of weight W is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A . the normal reaction on A is:NEET 2015 (Phase 1)

Options:

Answer:
D
Solution:


Equation for force balance
NA+NB=W...(i)
NB=W-NA
Equation for torque balance about centre of mass of rod.
NAx=NBd-x
NAx=W-NAd-x
NAx=Wd-Wx-NAd+NAx
NAd=Wd-x
NA=Wd-xd

Stream:NEETSubject:PhysicsTopic:NLMSubtopic:Simple Application of NLM
⏱ 2mℹ️ Source: PYQ_2015

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