1. A 1500 kg car is travelling around a corner with a radius of curvature of 65.0m. Calculate the minimum coefficient of friction required such that the car can successfully make the turn travelling with a constant speed of 60.0km/h.

Question 8 A car is travelling into an unbanked turn with radius of 11.0 m. The coefficient friction is 1.4. What is the maximum speed the car can travel and still be able to maintain a circular path? Answer in m/s to one decimal place. Your Answer: Answer Question 9 A ball on the end of a string is swung in a vertical circle. The length of the string is 0.4 m. What is the minimum speed required to maintain the circular motion? Answer in m/s to one decimal place. Your Answer: Answer units

A small car with mass 0.600 kg travels at constant speed on the inside of a track that is a vertical circle with radius 5.00 m (Figure 1 Figure B V 5.00 m K 1 of 1 If the normal force exerted by the track on the car when it is at the top of the track (point B) is 6.00 N, what is the normal force on the car when it is at the bottom of the track (point A)? Express your answer with the appropriate units. F = Submit μÀ Value Provide Feedback 6 Request Answer d C Units Neview Constalls ? Next >

13. ssm Review Example 3, which deals with the bobsled in Figure 5.5. Also review Conceptual Example 4. The mass of the sled and its two riders in Figure 5.5 is 350 kg. Find the magnitude of the centripetal force that acts on the sled during the turn with a radius of (a) 33 m and (b) 24 m.

3. A coin is placed 12.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turn table until a rate of 35.0 rpm is reached, at which point the coin slides off. (a) Find the speed of the coin just before it starts to slide. (b) What is the coin's acceleration just before it starts to slide? (magnitude and direction) (c) What is the source of the force that causes the coin to accelerate? (d) Find the coefficient of static friction between the coin and the turntable.

A rotating space station is said to create artificial gravity—a loosely-defined term used for an acceleration that would be crudely similar to gravity. The outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. An example of such a setup are Space Station V and the Discovery from the movie 2001: A Space Odyssey as shown below. If the space station is 1800 m in diameter, what angular velocity (in radians per second) would produce an artificial gravity similar to that on Earth inside the outer wall of the station?

A car rounds an unbanked curve of radius 65 m. If the coefficient of static friction between the road and car is 0.72, then answer the following questions. (a) What force provides the centripetal force? A. Weight of the car B. Normal force on the car from the road C. Force of static friction (b) What is the maximum speed at which the car can traverse the curve without slipping? Enter to 2 significant figures Vmax= 18.07 m/s