A spring with a force constant of 120 N/m is used to push a 0.27-kg block of wood against...

A spring with a force constant of 120 N/m is used to push a 0.27-kg block of wood against a wall, as shown in Figure. (a) Find the minimum compression of tine spring needed to keep the block from falling, given that the coefficient of static friction between the block and the wall is 0.46. (b) Does your answer to part (a) change if the mass of the block of wood is doubled? Explain.

FIGURE