Hello,

To calculate time, you need to have other values also and you have not mentioned what values are available.

In general, this formula is used to calculate the time taken by an object to reach the ground.

Here, t = time taken (req. value)

h = vertical height of the inclined plane

K = radius of gyration

R = radius of the rolling object

g = acceleration due to gravity

theta = angle made by the inclined plan with the horizontal plane.

Hope this helps.

Thanks.