Question 518 Deck General

The correct answer is C) 120°. When two falls are used to lift a one-ton load, the angle between the falls should be 120° to ensure that the stress on each fall is equal to the load being lifted. This is because at a 120° angle, the tension in each fall is equal to the weight of the load divided by the sine of half the angle between the falls (in this case, 60°). This distribution of the load equally between the two falls results in the stress on each fall being equal to the load being lifted. The other options are incorrect because they do not result in an equal distribution of the load between the two falls, leading to unequal stress on the falls.