A boy Pulling A load of 50newton with a string inclined at an Angle of 30degree to the horizontal, If the tension In string is 105newton. The force tending To lift the load off the ground is just?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.