Flag Mechanics> Newton's...
question mark

Two persons of equal height are carrying a long uniform of of length l.They are at distance l/4 & l/6 from nearest end of the rod.The ratio of normal reaction at their heads isa) 2:3b)1:3c)4:3d)1:2Two persons of equal height are carrying a long uniform of of length l.They are at distance l/4 & l/6 from nearest end of the rod.The ratio of naormal reaction at their heads isa) 2:3b)1:3c)4:3d)1:2

neeraj pawar , 15 Years ago
Grade 12
anser 1 Answers
Ramesh V

Last Activity: 15 Years ago

Take the moment about centre of mass of system. since the COM doesnot change,net moment abt it is zero

COM is at l/4 from A and l/3 from B

let N1 and N2 be normal reactions

then, N1*l/4 = N2*l/3

N1/N2 = 4/3

option C

--

regards

Ramesh

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...