A 4kg package is released from rest at point A and slides down a frictionless track until it reaches point B with a speed of 4.20 m/s. From point B it slides on a level surface with friction coefficient a distance of 3.00 m to point C, where it comes to rest. Calculate the height H Calculate the coefficient of kinetic friction on the horizontal surface.

Explanation:

(a)   According to the law of conservation of energy,

               Potential energy = Kinetic energy

                     mgh =

Putting the given values into the above formula as follows.

               mgh =

                    h = 0.9 m

Therefore, the height H is 0.9 m.

(b)   For the given situation,

             Kinetic energy = work done by friction

                   u = 0.3

Thus, we can conclude that the coefficient of kinetic friction on the horizontal surface is 0.3.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

its a 5.5 n

glad that