solve the equation,w=cr^2 solve for r. solve for c

Question

r=miles  1mile is 5280

w=pounds pounds is 100

100 pounds at sea level. find value of c that makes the equation true.( sea level is 3963 miles from the center of the earth.) use the value of c to find weigh in death valley (282 ft. below sea level.) use the value of c to find weigh in mount mckinsey (20320 ft above sea level.)

 hint: the formula is W=Cr^-2

Answer 1

w = cr^2  for r:

w/c = r^2

r = SQR(w/c)

 

for c:

w/r^2 = c