Physics Question!!!! I don't get this problem!?>?>?

Question

A machine in an ice factory is capable of exerting 2.83*10^2 N of force to pull a large block of ice up a slope. The block weighs 1.00*10^4 N. Assuming there is no friction, what is the maximum angle that the slope can make with the horizontal if the machine is to be able to complete the task?

Answer 1

split the weight in two direction,along the slope and perpendicular to it

1.00*10^4 *sin @= 2.83 *10^2 so sin @=2.83*10^-2 and @=1.62 degrees