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23 Nov 2019
One of the new events in the 2002 Winter Olympics was the sport ofskeleton (see photo). Starting at the top of a steep, icy track, arider jumps onto a sled (known as a skeleton) and proceeds-bellydown and head first-to slide down the track. The track has fifteenturns and drops 101 m in elevation from top to bottom.
(a) In the absence of nonconservative forces, such as friction andair resistance, what would be the speed of a rider at the bottom ofthe track? Assume that the speed of the rider at the beginning ofthe run is relatively small and can be ignored.
1 m/s
(b) In reality, the best riders reach the bottom with a speed of35.8 m/s (about 80 mi/h). How much work is done on an 84.1-kg riderand skeleton by nonconservative forces?
2 J
One of the new events in the 2002 Winter Olympics was the sport ofskeleton (see photo). Starting at the top of a steep, icy track, arider jumps onto a sled (known as a skeleton) and proceeds-bellydown and head first-to slide down the track. The track has fifteenturns and drops 101 m in elevation from top to bottom.
(a) In the absence of nonconservative forces, such as friction andair resistance, what would be the speed of a rider at the bottom ofthe track? Assume that the speed of the rider at the beginning ofthe run is relatively small and can be ignored.
1 m/s
(b) In reality, the best riders reach the bottom with a speed of35.8 m/s (about 80 mi/h). How much work is done on an 84.1-kg riderand skeleton by nonconservative forces?
2 J
Trinidad TremblayLv2
20 Jul 2019
