NEED ASAP: A crate is placed on a ramp that has a 30-degree incline. If the crate is 45 kg, and if the coefficient of static friction is 0.35, will the crate slide down the ramp or stick in place? If so, what will the net force in the x-direction be? (PLEASE SHOW WORK)

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?