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# tutorial6 - 8.24kN 6 Compare the force exerted on the toe...

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ME1300 – Statics Tutorial 6 1. Determine the reactions at the point of contact at A, B and C. Ans = 493N, 554N, 247N 2. Determine the reactions at the pin A and at the roller at B of the beam. Ans = 642N, 192N, 180N

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ME1300 – Statics Tutorial 6 3. When holding the 20 N stone in equilibrium, the humerus H, assumed to be smooth, exerts normal forces F C and F A on the radius C and ulna A as shown. Determine these forces and the force F B that the biceps B exerts on the radius for equilibrium. The stone has a centre of mass at G. Neglect the weight of the arm. Ans = 120N, 144.9N, 37.51N 4. The man is pulling a load of 40N with one arm held as shown. Determine the force F H this exerts on the humerus bone H, and the tension developed in the biceps muscle B. Neglect the weight of the man’s arm. Ans = 288.89N, 328.89N
ME1300 – Statics Tutorial 6 5. Determine the magnitude of force at the pin A and in the cable BC needed to support the 2000N load. Neglect the weight of the boom AB. Ans= 7.28 kN,

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Unformatted text preview: 8.24kN 6. Compare the force exerted on the toe and heel of a 480 N woman when she is wearing regular shoes and stiletto heels. Assume all her weight is placed on one foot and the reaction occur at points A and B as shown. Ans = 397.7N, 396.5N ME1300 – Statics Tutorial 6 7. The platform assembly has a weight of 1000N and a centre of gravity at G 1 .If it is intended to support a maximum load of 1600N place at point G 2 , determine the smallest counterweight W that should be placed at B in order to prevent the platform from tipping over. Ans = 314.29N 8. The sports car has a mass of 1.5 Mg and mass centre at G. If the front two springs each have a stiffness of k A =58kN/m and the rear two springs each have a stiffness of k B =65kN/m, determine their compression when the car is parked on the 30 degree incline. Also, what friction force F B must be applied to each of the rear wheels to hold the car in equilibrium? Ans=3.68kN, 53.2m, 50.5 mm...
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tutorial6 - 8.24kN 6 Compare the force exerted on the toe...

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