A 700-kg horse A lifts a 50-kg hay bale B as shown. At the instant when r = 8 m and 0 = 60°, the velocity and acceleration of the horse are 2 m/s to the right and 0.5 m/s2 to the left, respectively. Neglecting the mass of the pulley, determine at that instant (a) the tension in the cable, (b) the average horizontal force between the ground and the horse's feet. ANSWERS). a). 475N b). 61.4 N -> DO NOT POST AN ANSWER IF THE ANSWERS DO NOT MATCH!
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- A service elevator takes a load of garbage, mass 10.0 kg, from a floor of a skyscraper under construction, down to ground level, accelerating downward at a rate of 1.2m/s2 . Find the magnitude of the force the garbage exerts on the floor of the service elevator?You are climbing on a hill that is inclined at 15degrees with the horizontal and you wish tobuild a rope tow to pull yourself up. Ignoring friction, calculate the tension you needed on therope to give your body that has a mass of 45kg a 1.5 m/s^2 acceleration. What if you are toconsider the friction of 100N, what is the value of the tension and coefficient of friction?A 45.0-kg crate of tools rests on a horizontal floor. You exert a gradually increasinghorizontal push on it and observe that the crate just begins to move when your forceexceeds 313 N. After that you must reduce your push to 208 N to keep it moving at asteady 25.0 cm/s. (a) What are the coefficients of static and kinetic friction between thecrate and the floor. (b) what push must you exert to give it an acceleration of 1.10 m/s2 ?
- the net external force on the 24-kg mower isstated to be 51 N. If the force of friction opposing the motionis 24 N, what force F (in newtons) is the person exerting onthe mower? Suppose the mower is moving at 1.5 m/s whenthe force F is removed. How far will the mower go beforestopping?A traveler pulls on a 25 kg suitcase strap atan angle 36° above the horizontal. If thesuitcase started at rest, and has a final speedof 1.5 m/s while the suitcase moved ahorizontal distance of 15 m, what is thetension in the strap?The fire alarm goes off, and a 97-kg fireman slides 3.0 m down a poleto the ground floor. Suppose the fireman starts from rest, slides withconstant acceleration, and reaches the ground floor in 1.2 s. What wasthe upward force F>exerted by the pole on the fireman?
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