24its easy dude.........
just draw the FBD
A small mass is suspended by a strung from the ceiling of a car.As the car accelerates at a rate "a" the string makes an angle θ with the vertical then tension of string is ?
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4 Answers
1as the string is bend by angle ∂,where ∂=thita
the tension would have two components.Tcos∂ would be balanced by the weight mg and Tsin∂ by ma(Force due to accn.)
so,Tsin∂=ma, Tcos∂ = mg and divide to get a=g tan∂