Need Help ASAP!!! hey can some1 help me with these 2 physics questions..really need it...it's my last hw assigment and i have trouble with this 2...please help it's due tomorrow morning...show what me to do..thankssssssssss 1. A stone is tied to a string (length = 1.27 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in the string is 15% larger than the tension that exists when the circle is horizontal. Determine the speed of the stone. 2.Suppose the surface (radius = r) of a cylindrical space station is rotating at 33.8 m/s to provide artificial gravity. What must be the value of r for the astronauts to weigh 1/2 of their earth weight?