4. The 100-lb crate is initially stationary. The coefficients of friction between the crate and the inclined surface are μ,-0.2 and -0.16. If the horizontal force of 90 lb is applied, (a) show that the crate will move. [10 points] (b) determine how far the crate moves from its initial position in 2 s. [15 points] (26.3; 27.9 needed (b) 4.43 f 36 FBD N ☐