Units Suppose you have a 125 kg wooden crate resting on a wood foor, with coefficient of static friction 0.55 between these wood surfaces. (a) What is the magnitude of the maximum force can you exert horizontally on the crate without moving it? (b) If you continue to exert this force once the crate starts to slip. what will is acceleration then be? The coefficient of sliding friction is known to be 0.35 for this situation.