L1, L3 NB L2 Question 2 (10 marks) In the gear-shaft system shown, the shear modulus of all shafts is 9000 ksi. Shafts (

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L1 L3 Nb L2 Question 2 10 Marks In The Gear Shaft System Shown The Shear Modulus Of All Shafts Is 9000 Ksi Shafts 1 (266.23 KiB) Viewed 14 times

L1, L3 NB L2 Question 2 (10 marks) In the gear-shaft system shown, the shear modulus of all shafts is 9000 ksi. Shafts (1) and (2) are solid diameter 1.25 in. Shaft (3) is solid diameter 1.5 in. Given that Li=L3=50 in, L2=30 in, NB=60 teeth, and Ne=120 teeth. a) (6 marks) Derive expression for the internal torque of all shafts in term of Tc. b) (4 marks) Compute the maxium allowable torque Tc, if the allowable shear stress in all shafts and the angle of twist with respect to A and D are 25 ksi and 5º, respectively. B Tc NE E X