Chapter 2, Problem 2/149 Car A rounds a curve of 139-m radius at a constant speed...
Car A is traveling at the constant speed of 61 km/h as it rounds the circular curve of 285-m radius and at the instant represented is at the position 8 46°. Car B is traveling at the constant speed of 81 km/h and passes the center of the circle at this same instant. Car A is located with respect to car B by polar coordinates r and with the pole moving with B For this instant determine the values of...
A 13004 N car traveling at 41.4 km/h rounds a curve of radius 2.28 × 102 m. The acceleration of gravity is 9.81 m/s2 . a) Find the centripetal acceleration of the car. Answer in units of m/s2 b) Find the force that maintains circular motion. Answer in units of N. c) Find the minimum coefficient of static friction between the tires and the road that will allow the car to round the curve safely.
A car rounds a curve of radius 30 m. If the maximum centripetal acceleration is 5m/s2, what is the maximum speed of the car in kilometers per hour?
Car A goes along a curve of 100 m radius at a speed of 10 m/s and increasing at the rate of 5 m/s2 whereas Car B is moving along a straight stretch of road with a velocity of 18.5 m/s and increases at a rate of 2 m/s2. The position of both cars A and B at a particular instant is as shown in Figure Q2(a). Calculate the acceleration of car A relative to car B and their relative...
A 1200 kg car rounds a curve of radius 69 m banked at an angle of 12°. What is the magnitude of the friction force required for the car to travel at 90 km/h?
A runner moving at a constant speed of 12.1 m/s rounds a curve of radius 3.80 m. Compute the acceleration of the runner. (State the magnitude of this acceleration.)
A runner moving at a constant speed of 12.7 m/s rounds a curve of radius 5.95 m. Compute the acceleration of the runner. (State the magnitude of this acceleration.) Are these numbers realistic? (Yes or no)
A car moving with a constant speed of 85 km/h enters a circular, flat curve with a radius of curvature of 0.40 km. If the friction between the road and the car’s tires can support a centripetal acceleration of 1.25 m/s2, without slipping, does the car navigate the curve safely, or does it fly off the road?
Question is asking for the: r double dot, theta double dot and also, r double dot =1.98 m/s^2 and theta double dot 0.0144 rad/s^2 are incorrect. Thank you!! Car A is traveling at the constant speed of 47 km/h as it rounds the circular curve of 205-m radius and at the instant represented is at the position e traveling at the constant speed of 60 km/h and passes the center of the circle at this same instant. Car A is...