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MIE 310 2012 HW 4

# MIE 310 2012 HW 4 - Dynamics MIE 230 Spring 2012 Problem...

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Spring, 2012 Problem Set #5 Due: Wednesday, February 29 1. During a brake test, the rear-engine car is stopped from an initial speed of 100 km/h in a distance of 50 m. If it is known that all four wheels contribute equally to the braking force, determine the braking force F at each wheel. Assume a constant deceleration for the 1500-kg car. Ans. F = 2890 N 2. The 10-Mg truck hauls the 20-Mg trailer. If the unit starts from rest on a level road with a tractive force of 20 kN between the driving wheels of the truck and the road, compute the tension T in the horizontal drawbar and the acceleration a of the rig. Ans. T = 13.33 kN, a = 0.667 m/s2 3. A man pulls himself up the 15° incline by the method shown. If the combined weight of the man and the cart is 250 lb, determine the acceleration a of the cart if the man exerts a pull of 60 lb on the rope. Neglect all friction and the mass of the rope, pulleys and wheels. Ans.

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MIE 310 2012 HW 4 - Dynamics MIE 230 Spring 2012 Problem...

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