1. A car maintains a constant speed v as it traverses the hill and valley shown. Both the hill and valley have a radius of curvature R. How do the normal forces acting on (a) the car at A, B, and C compare? (Which is largest? Smallest?) Explain. (b) Where would the driver feel heaviest? Lightest? Explain. How fast can the car go without losing contact with the road at A? (c)
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- how to do?C. Which of Newton's Laws applies in reference to your body pulls to the right when the car turns to the left? 6. Describe what tangential velocity is in terms of swinging the bucket in a vertical circle and then letting the bucket go. 7. True or False: The centripetal force has the same direction as the centripetal acceleration. 8. Write the formula of cent etal acceleration in terms of tangential velocity. 9. Write the Formula of centripetal force in terms of tangential velocity.Children of mass 54 kg ride on a Ferris wheel as shown in Figure. Children move in a vertical circle of radius 14.5 m at a constant speed of 2.85 m/sec. = 0.56 m/sec² a) What is the centripetal acceleration each of the children? Answer: ac b) What is the normal force from the chair when a child is at the Top of the circle, as shown in the Figure? Draw a Free-Body Diagram for this situation in the figure below. Answer: NTop = 499.0 N c) What is the normal force from the chair when a child is at the Bottom of the circle, as shown in the Figure? Draw a Free-Body Diagram for this situation in the figure below. Answer: N Bottom = 559.4 N Top 7 Bottom R
- A 2000 kg car going at a steady speed of 18.0 m/s takes a curve with a 50.0 m radius. The road is level. 1. Draw an FBD. 2. Find the centripetal force of the car. 3. Find the frictional force of the car. 4. Find the weight of the car. 5. What is the minimum value that the coefficient of static friction between the tires and the road must have so that the car takes this curve without slipping?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 unitsPlease answer in 30 min. I will upvote.
- MCQ 5. A roller-coaster car has a mass of 500 kg when fully loaded with passengers. The car passes over a hill of radius 15 m, as shown. At the top of the hill, the car has a speed of 8.0 m/s. What is the force of the track on the car at the top of the hill? 15 m 8.0 m/s a. 7.0 kN up b. 7.0 kN down c. 2.8 kN down d. 2.8 kN up e. 5.6 kN down 71672A 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/sWhat happens to a car traveling on a spiral path, toward the center, if its speed stays the same the whole time? and why ? a. the acceleration increases b. Its centripetal force gets bigger c.Its centripetal force gets smaller d.Its acceleration decreases