The race car has an initial speed vA = 15 m>s at A. If it increases its speed along the circular track at the rate at = (0.4s) m>s2, where s is in meters, determine the time needed for the car to travel 20 m. Take r = 150 m.

Problem 12-142

The race car has an initial speed vA = 15 m/s at A. If it increases its speed along the circular track at the rate at = (0.4s) m/s2, where s is in meters, determine the time needed for the car to travel 20 m. Take p = 150 m.

Step by Step Solution

Step 1 of 2

The position of the race car at any instant is defined from the fixed point A using the position or path coordinate s.The time is to be determined so that the car travels 20 m at B.

The race car increases its speed along the circular track at the rate , where s is in meters.

If when ,then we have