Centripetal force acts to in the direction of the center of the circle and is given by equation: Fc = mv2/r. where: Fc = centrifugal force m = mass v = speed and r = radius. The Centrifugal force act in an opposite direction of the Centripetal force but it has the same magnitude.
Simon & Garfunkel were an American folk rock duo consisting of singer-songwriter Paul Simon and singer Art Garfunkel. They were one of the most popular recording artists of the 1960s and became counterculture icons of the decade's social revolution, alongside artists such as the Beatles, the Beach Boys, and Bob Dylan.
In the Grammy footage he looks smaller than lennon. I don't know if Anonasensei is looking at his tall hair rather than his eyeline. Simon was so much smaller that the slim Garfunkel would always look giant in comparison. Penn from Penn and Teller comments that Teller is the same height as Garfunkel but one is called short and the other tall. Anonasensei said on 3/Sep/15 I notice this pic listed below might have been used to say Art is 5-9 based on him looking an inch shorter than 5-10 David Bowie: