1.

The robotic arm model ABC is represented as a rigid body with a mass of 79 kg. Assume that the moment of inertia at the center of mass is 189.26 kg m² where the center of mass is located at point C at the coordinate (x2, y2) where x2 = 0.84 m, x1= 0.24 m, y1 = 0.24 m & y2 = 0.99 m. At point A the axis of rotation is located and is considered static. The pneumatic actuator (piston) exerts a force of 3656 N at point B with coordinates (0.24, 0.24) in meters.

Determine the moment of inertia in kg m² for the point of rotation A in this case. DO NOT enter units

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The 2-slug ball is to be fired from rest using a spring that has a stiffness constant of k = 40 lbf/ft.

Determine the distance the spring must be compressed so that when the ball reaches a height of 6 ft it has a velocity of 15 ft/s.

Question 1 X2 X1 y2 y1