The roche limit is the radial distance from the center of a planet at which the tidal forces exerted by the planet on one of its moons will overcome the gravitational force holding the moon together. the result is that the moon will be torn apart (or never succeed in forming in the first place) and eventually form a ring around the planet from the material of the disintegrated moon. the roche limit can be determined from?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.