4. A small race car has an aluminum hub (shown in red). The drive axle is press-fit intothe hub, resulting in compressive pressure and torsional friction as shown below whenthe wheel is powered. Assuming a coefficient of static friction of 0.3 and a shear yieldstrength of 30 ksi for the shaft, determine the maximum allowed contact pressure, p (inpsi). In other words, how much contact pressure (and resulting torque) would causeyielding of the shaft?Given: d=0.75in, w=1.5inf: Friction force per unit areap: Normal force per unit area

Answered: Image /qna-images/answer/9c9a487d-e40b-469b-acfe-8ae0d715c73a.jpg

Answered: 4. A small race car has an aluminum hub…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A cylinder is moving a 6000 Ib load up a 20° slope as shown in the figure below. The friction coefficient between the sloping surface and the load is 0.4. The internal cylinder friction is negligible. The piston area is 3 in² and the rod area is 2in?. Provide and answer for both A and B below. A. What cap end pressure (in psi) is required to accelerate the load from O ft/min to 25 ft/min in 0.5 inches? B. What cap end pressure is required (in psi) to move the load up the slope at a constant velocity of 25 ft/min? W Angle
An open belt 100 mm wide connects two pulleys mounted on parallel shafts with their centres 2.4 mapart. The diameter of the larger pulley is 450 mm and that of the smaller pulley 300 mm. The coefficient of friction between the belt and the pulley is 0.3 and the maximum stress in the belt is limited to14 N/mm width. If the larger pulley rotates at 120 r.p.m., find the maximum power that can be transmitted
Flat belt 100mm wide and 8mm thick transmits power between two pulleys, running at 1600 m/min. The mass of belt is 0.9kg/m length, the angle of lap in the smaller pulley is 1650 and the coefficient of friction between the belt and pulleys is 0.3, If the maximum permissible stress in the belt is 2MN/m2, find the maximum power transmitted. 1 Add file
Given: Q=14,361.60gpm L=1000ft D=2ft hf=12.58ft. Determine the friction (f).
5. An open belt 100 mm wide connects two pulleys mounted on parallel shafts with their centres 2.4 m apart. The diameter of the larger pulley is 450 mm and that of the smaller pulley 300 mm. The coeffi- cient of friction between the belt and the pulley is 0.3 and the maximum stress in the belt is limited to 14 N/mm width. If the larger pulley rotates at 120 r.p.m., find the maximum power that can be trans- mitted. [Ans. 2.39 kW]
Flat belt 100mm wide and 8mm thick transmits power between two pulleys, running at 1600 m/min. The mass of belt is 0.9kg/m length, the angle of lap in the smaller pulley is 165o and the coefficient of friction between the belt and pulleys is 0.3, If the maximum permissible stress in the belt is 2MN/m2, find the maximum power transmitted.
4.) A flat belt makes contact with an 16 in. diameter pulley through half its circumference. If the coefficient of friction is 0.45 , and a torque of300ft−bsis to be transmitted, calculate the belt tensions. (please type answer not write by hend)
A 750 mm steel pulley transmits 120 hp at 700 rpm. The arc of contact between the belt and pulley is 152 degrees, the coefficient of friction between belt and pulley is 0.30 and the safe working stress of the belt is 2.0 MPa. Find the width of the belt used in mm if its thickness is 20 mm.
The block brake, as shown in the figure, provides a braking torque of 376 N-m. The diameter of the brake drum is 258 mm. The coefficient of friction is 0.3. Find: a. The force (P), in Newtons, to be applied at the end of the lever for the clockwise rotation of the brake drum b. The force (P), in Newtons, to be applied at the end of the lever for the counter clockwise rotation of the brake drum; and c. The location of the pivot or fulcrum, in mm, to make the brake self-locking for the clockwise rotation of the brake drum.
A workshop crane is lifting a load of 28 kN through a wire rope and a hook. The weight of the hook etc is 15 kN. The rope drum diameter may be taken as 30 times the diameter of the rope. The load is to be lifted with an acceleration of 1.2 m/sec2. Take a factor of safety of 6 and Young's modulus for the wire rope is 80 kN/mm2. The ultimate stress may be taken as 1800 MPa. The cross-sectional area of the rope may be taken as 0.38 times the square of the wire rope diameter. Neglect the effect of impact load. Calculate the diameter of the wire rope.
A pull of 31.89 N at 30° to the horizontal in necessary to move a block of wood on a horizontal table (the shown figure below). If the coefficient of friction between the bodies in contact is 0.135, what is the weight of the block?
The coefficient of friction between the belt and the pulley is 0.3 and the maximum stress in the belt is limited to 14 N/mm width. If the larger pulley rotates at 120 r.p.m., find the maximum power that can be transmitted. Q2 Find the diameter of a shaft made of 37 Mn 2 steel having the ultimate tensile strength as 600 MPa and yield stress as 440 MPa. The shaft is subjected to completely reversed axial load of 200 kN. Neglect stress concentration factor and assume surface finish factor as 0.8. The factor of safety may be takenas 1.5. Q3 a) An universal coupling is used to connect two mild steel shafts transmitting a torque of 6000 N- m. Assuming that the shafts are subjected to torsion only, find the diameter of the shaft and the pin. The allowableshear stresses for the shaft and pin may be taken as 55 MPa and 30 MPa respectively.

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