A trolley is pulled by two ropes with equal tensions. The ropes are initially horizontal and parallel. They are then arranged symmetrically at equal angles above and below their original direction. The tension in each rope remains unchanged. What happens to the resultant pulling force?
Its magnitude decreases and its direction is unchanged.
Its magnitude increases and its direction is unchanged.
Its magnitude is unchanged and its direction turns upwards.
Its magnitude is unchanged and its direction turns downwards.