: The producer of the last film you worked on was so impressed with the way you

Question

: The producer of the last film you worked on was so impressed with the way you handled a helicopter scene that she hired you again as technical advisor for a new "James Bond" film. The scene calls for 007 to chase a villain onto a merry-go-round. An accomplice starts the merry-go-round rotating in an effort to toss 007 (played in this new version by Billy Crystal) off into an adjacent pool filled with hungry sharks. You must determine a safe rate of rotation such that the stunt man (you didn't think Billy would do his own stunts did you?) will not fly off the merry-go-round and into the shark-infested pool. (Actually they are mechanical sharks, but the audience doesn't know that.) You measure the diameter of the merry-go-round as 50 meters. You determine that the coefficient of static friction between 007's shoes and the merry-go-round surface is 0.7 and the coefficient of kinetic friction is 0.5.

Explanation / Answer

for safe purpose friction force will provide the centripital force

Fc=Ff

m*v^2/r=0.5*m*g

v=11.07 m/s the static friction says that how much force is to be required to initiate the motion

F=0.7*9.81*m

=6.867m N ans

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