Test \"Circular Motion\" What motion is called uniform circular? What is the direction of acceleration associated with this motion? (2 marks, K) A bird of mass 200 g pulls out a dive, the bottom of which is a circular arc with a radius of 25 m. At the lowest point of the arc, the bird's speed is 28 m/s. Determine the magnitude of the upward force on the bird's wings at that point. Draw a free-body diagram. (3/1 marks, T/C) . A 2.0 kg stone attached to a rope 1.5 m long is whirled in a circle horizontally on a frictionless surface, completing 5.0 revolutions in 2.0 5. Calculate the magnitude of tension in the rope. Draw a free-body diagram. Why does gravity not affect the force of tension? (3/2 marks, NC) A highway curve is banked so that vehicles can proceed safely even if the road is slippery. Determine the proper banking angle for a car travelling at 95 km/h on a curve of radius 430 m. Draw a free-body diagram. (4/1 marks, A/C) A car is to round a level curve of radius 62 m at a speed of 55 km/h. How large must the coefficient of friction be between the car's tires and the road? Draw a free-body diagram. What is the type of the force of friction? (4/1 marks, A/K)