A bob is hanging over a pulley inside a car through a string. The second end of the string is in the

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A bob is hanging over a pulley inside a car through a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration &#8242;a&#8242; directed horizontally as shown in figure. Other end of the string is pulled with constant acceleration &#8242;a&#8242; (relative to car) vertically. The tension in the string is equal to-

Accepted Answer

(Force diagram in the frame of the car)
Applying Newton′s law perpendicular to string
mg sinθ = ma cos θ
tan θ = a/g
Applying Newton′s law along string ⇒ T − m= ma T = m+ ma Ans.

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