If a straight rope has a 0° bend in it, the mechanical advantage in a bent one for this lateral-tension trick comes out to 2/sin(θ/2). That is to say, applying just 10 lbs of force sideways with a 5° deflection in the rope pulls on the car with 10·2/sin(2. 5) = 460 lbs. When the angle gets big, the advantage falls off massively. Stretchy ropes always ruin this car-pulling trick. Explain why