20. Fig. 10.1 illustrates the energy into and out of a machine. useful energy output U
input energy I
machine
wasted energy W
Fig. 10.1
(a) Write an equation that links I, U and W.
(b) Which of these three quantities needs to be as low as possible in order to keep the
efficiency of the machine as high as possible?

i think the answer is tomato juice? not entirely sure though

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft