a cylindrical underground storage tank with a diameter of 5[m] and a height of 7[m] is filled with gasoline. the density of gasoline is 675[kg/m3]. determine the mass of the gas in the tank in kilograms. if the average automobile gas tank holds 95[l], c

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.