2., A body of mass M is tied to the end of a light inextensible string and whirled in
vertical circle at constant speed. The
difference in tensionat lowest point
and highest point is Tis man at lage
a. 4 Mg
b. 2 Mg
c. 3 Mg
d. 6 Mg​

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.