Aspecial electronic sensor is embedded in the seat of a car thattakes riders around a circular loop-the-loop at an amusement park. the sensor measures the magnitude of the normal force that the seatexerts on a rider. the loop-the-loop ride is in the vertical planeand its radius is 24 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads990 n. at the top of the loop, the rider is upside-down and moving, and the sensor reads 360 n. what is the speed of the rider at thetop of the loop?

v = 17.9 m/s

Explanation:

As we know that the normal force measured by the sensor before the ride is started is given as

now when the rider has reached at the top position of the loop then the normal force is given as

now at the top position we have

so we have

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.