Questions
A plumb bob is hung from the ceiling of a train compartment. The train moves on an inclined track of inclination 30° with horizontal. The acceleration of train up the plane is a = g/2. The angle which the string supporting the bob makes with normal to the ceiling in equilibrium is
detailed solution
Correct option is B
T sinθ - mg sin 30° = ma⇒ T sinθ = mg sin 30° + mg/2 ......... (i)T cosθ = mg cos 30° .......... (ii) Dividing Eqs. (i) by (ii), we gettanθ=23Talk to our academic expert!
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A uniform sphere of weight W and radius 3 m is being held by a string of length 2m.attached to a frictionless wall as shown in the t figure. The tension in the string will be:
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