When a train starting from rest is uniformly accelerating, a plumb bob hanging from the roof of a compartment is found to be inclined at an angle of 45^(@) with the vertical. The time taken by the train to travel a distance of 1//2km will be nearly

When a train starting from rest is uniformly accelerating, a plumb bob

1.	When a train starting from rest is uniformly accelerating, a plumb bob hanging from the roof of a compartment is found to be inclined at an angle of 45^(@) with the vertical. The time taken by the train to travel a distance of 1//2km will be nearly
Answer» 7s 10s 15s 25s Solution :`a COS THETA=g sin theta, s=ut+(1)/(2)at^(2)`