A trolley is accelerating down an incline of angle \( \theta \) with acceleration \( g \sin \the...

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A trolley is accelerating down an incline of angle \( \theta \) with acceleration \( g \sin \theta \). Which of the following is correct. ( \( \alpha \) is the constant angle made by the string with vertical).
(a) \( \alpha=\theta \)
(b) \( \alpha=0^{\circ} \)
(c) Tension in the string, \( T=m g \)
(d) Tension in the string, \( T=m g \sec \theta \)
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