Fc = 0.224 N (b) Assuming an unbanked curve, find the minimum static coefficient of friction between the tires and the road, static friction being the reason that keeps the car from slipping (see figure below). X Free-body diagram N W

Merry-go-round Fir for maximum a Consider the father pushing a playground merry-go-round as pictured above. He exerts a force of 302N on the 50.0-kg merry-go-round, which has a 1.48m radius. Consider the merry-go- round itself to be a uniform disk with negligible retarding friction. a) How long does it take the father to give the merry-go-round and his 18.0-kg child sitting at the outer edge an angular velocity of 1.6 rad/s? b) How many revolutions must he go through to generate this velocity? rev c) If he exerts a slowing force of the same magnitude, how long would it take him to stop them?

e Calculate the centripetal force on the end of a 122-m (radius) wind turbine blade that is rotating at 0.5 rev/s. Assume the mass is 6 kg. F₁ = Question Help: Submit Question Read 1 Hint 1 Read 2

A. A 1800 kg car's tires have a coefficient of friction equal to 0.25 on wet asphalt. What is the fastest that this car can drive along a flat turn with a radius of 200 m without slipping? B. How would this speed change if the car had a mass of 3600 kg instead? C. How would this speed change if the road were slanted? Would the possible speed be higher or lower?