Chapter 5135P5.38If all the weight is on the rear wheels,(a)Fmamgmas==:µBut∆xatgts==2222μso µsxgt=22∆:µs==2 0 2501 6099 804 963 342....mim mimss2afbgejaf.(b)Time would increase, as the wheels would skid and only kinetic friction would act; orperhaps the car would flip over.*P5.39(a)The person pushes backward on the floor. The floor pushes forwardon the person with a force of friction. This is the only horizontalforce on the person. If the person’s shoe is on the point of slippingthe static friction force has its maximum value.FmafnmaFmanmgmamgagxxvta tttxxsxyyxsxsfixix∑∑====−======++=++
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