A heavy ball is suspended from the celling of a moter car through a light string.A transvers pulse travels at aspeed of 60cm/s on the string when car is in rest and 62cm/s when the car accelerates on a horizontal road.Find the acceleration of the car.g=10m/s² 

An accelerationg car will have the heavy ball inclined a little find out the inclination, and use wave equation to find the speed of the pulse .