What Is the Proper Banking Angle for an Olympic Bobsled $51 ^ { \circ }$

Multiple Choice

What is the proper banking angle for an Olympic bobsled to negotiate a 100-m radius turn at 35 m/s without skidding?

A) $51 ^ { \circ }$
B) $61 ^ { \circ }$
C) $31 ^ { \circ }$
D) $41 ^ { \circ }$