Two steel balls, each of mass m = 1.84 kg, are welded to a light rod of length L = 545 mm and negligible mass and are initially at rest on a smooth horizontal surface. The distance b= 111 mm. A horizontal force of magnitude F= 27 N is suddenly applied to the rod as shown. Determine (a) the magnitude of the instantaneous acceleration a of the mass center G and (b) the magnitude of the corresponding rate 0 at which the angular velocity of the assembly about G is changing with time. Answers: a= 0 = m/s² rad/s²

Consider a rigid body initially at rest and subjected to an impulsive force F contained in the plane of the body. We define the center of percussion P as the point of intersection of the line of action of F with the perpendicular drawn from G(a) Show that the instantaneous center of rotation C of the body is located on line GP at a distance GC = k2/GP on the opposite side of G. (b)  Show that if the center of percussion were located at C, the instantaneous center of rotation would be located at P.

The 2.00-kg slender rod shown is hanging in a vertical position and is pin-supported at point A. The slender rod is initially at rest until a 1.000-kg block C, strikes it at its end at point B. The block slides on a frictionless surface with a velocity of 3.50 m/s to the right. After the impact, it slides with a velocity of 1.250 m/s to the right, and the bar rotates with an angular velocity, w'. 3.5 m/s с B 1.5 m Answer the following questions given the picture. Please show clear solutions, I want to learn how to solve the problem. 1a. Which of the following gives the correct kinematic relationship relating the final velocity of the center of the rod, v'G, and its angular velocity, w'? A) 1.333 w' B) 0.667 w' C) 1.500 w' D) 0.75 w' 1b. Which of the following gives the closest value of the magnitude of the horizontal impulse at the support at point A? A) 1.125 N-s B) 1.350 N-s C) 0.1180 N-s D) 2.25 N-s

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