Exercise 3 (points: 2.5) The homogeneous board in Figure 2 has length = 6m and mass m = 60kg. The board is placed on the

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Exercise 3 Points 2 5 The Homogeneous Board In Figure 2 Has Length 6m And Mass M 60kg The Board Is Placed On The 1 (43.96 KiB) Viewed 26 times

Exercise 3 (points: 2.5) The homogeneous board in Figure 2 has length = 6m and mass m = 60kg. The board is placed on the points A and Cand can rotate around C. The distance between A and C (₁) is of 1m. A man of mass mm = 50 kg walks along the board starting from A (A) What is the maximal distance the man can reach without making the board rotating? (The question can be rephrased as: "at which point & the center of gravity of the system board plus man is over the pivot?") B A C Figure 2 Exercise 4 (points: 2.5) A man is running when he jumps on a stationary cart in front of him. The run of the man and the motion of the cart carrying the man take place on a horizontal street. The man has a mass 3 m = 75 kg, whereas the mass of the cart, w, is of 25 kg. If the speed of the man is r = 4 when he jumps onto the cart. (A) what is the speed of the cart (vy) after the man jumps on? (No digital digits are needed). Exercise 5 (points: 2.5)
Figure 2 Exercise 4 (points: 2.5) A man is running when he jumps on a stationary cart in front of him. The run of the man and the motion of the cart carrying the man take place on a horizontal street. The man has a mass m = 75 kg, whereas the mass of the cart, m, is of 25 kg. If the speed of the man is = 4 when he jumps onto the cart. (A) what is the speed of the cart (vy) after the man jumps on? (No digital digits are needed). Exercise 5 (points: 2.5) An object O, of mass 4 kg hits an object O₂ of mass my2kg that is initially at rest. The collision is perfectly inelastic (ie. the two objects stick to each other after the collision) and the total kinetic energy of the system after the collision is K = 60.7. (A) What is the initial kinetic energy of O₁? (No decimal digits in the answer).