Answer the physics question and show ALL work used to get the correct solutions.

Problem 1: Referring to Figure 2.3 in the textbook, assume that the angle between the fin bone and the spine is 45 and the coefficient of friction between the bones to prevent dislodging of the bone is 1.0, what is the value of the angle 0 at which a force of 0.2 N will just dislodge the bone? What would this angle be if the bones were lubricated (u = 0:01)?Figure 2.3km is a simplied representation of the spine and the protruding n. The shaded block represents the movable fin bone, and the horizontal block is the spine holding the fin. Assume that a force F at an angle 19 is applied at point A to dislodge the bone. The force is shown to act at pointA, 2.5 cm above point B. Dorsal spine {A} Fin bone kH {B} ' 1 CH1 ' FIGURE 2.3 {A} Catfish. {E} Simplified representation of the spine in the catsh