6. A 200 kg box is pulled at constant speed by the little engine pictured below. The box moves a distance of 2.5 m across a horizontal surface. Jk = 0.20 a. Draw a force diagram of all relevant forces acting on the box. b. Sketch a qualitative energy bar graph/flow diagram for this situation. Be sure to specify your system. c. Calculate how much energy is transferred by the engine. d. Describe the motion of the box if the engine pulled with a force of 500 N. Justify with a force diagram and calculations. 4. m=15 kg Eel-500J Initi Initial h = 50 cm v = ? Ek Eg Eel Energy Flow Diagram 0 a. Calculate the velocity of the cart when it is half way up the loop. b. Calculate if the cart will make it through the loop. 0 Final Ek Eg Eel Eint 5. The bullet strikes a block of wood which exerts, on average, a force of 50,000N opposing the motion of the bullet. Calculate how far does the bullet penetrates into the wood. 256 v=950 mla Initial Ek Eg Eel Energy Flow Diagram Final Ek Eg Eel Eint Initial Final 0 0