6) A screw jack is used to lift a mass of 500kg. The screw has a thread with a pitch of 8 mm. An effort of 55 N has to be applied tangentially at a radius of 290 mm to lift the load. Calculate the velocity ratio, the mechanical advantage and the efficiency of the screw jack..

Q: A single-threaded power screw of square form is to raise a load of 90KN at the rate of 360mm/min.…

A: The given information in the problem are shown in the following attached image:

Q: Compare the weights of equal lengths of hollow and solid shafts to transmit a given torque for the…

A:

Q: A screw jack has a thread with a pitch of 4 mm and diameter 22mm. The coefficient of friction is…

A: A screw jack withThe pitch of thread (p) = 4 mmThe diameter (d) = 22 mm The coefficient of friction…

Q: How much torque must be applied to drive the screw with the applied load in units of newton meters?

A: Here,  is lead angle,  is pitch,  is mean thread diameter.

Q: calculate the speed (rpm)

A: calculate the speed (rpm)

Q: A screw jack mechanism is to be incorporated into the machine as part of a levelling system. The…

A: Given data as per the question Diametre of jack =45 mm Thread pitch =6 mm coefficient of friction…

Q: 1. A machine vice, as shown in the figure has single start, square threads with 22 mm nominal…

A:

Q: A lead screw and saddle arrangement is used to lift a load of 200kg. The square thread has a pitch…

A: Power screws are the mechanical devices which are used for converting the rotary motion in to the…

Q: 10 A flat spiral spring is 12 mm wide, 0.3 mm thick and 2.5 m long. Assuming the maximum stress of…

A: A flat spring is 12 mm wide, 0.3 mm thick, and 2.5 m long, as far as we know.The maximum stress of…

Q: A single-threaded power screw with square threads pushes against a load of 3,736 N at a speed of 42…

A: Here,  is lead angle,  is pitch,  is mean thread diameter.

Q: Calculate the torque.

A: The applied force is F = 89 cN = 0.89 NLength of crowbar L = 0.7angle = 80 degreeTorque is defines…

Q: A screw jack has a thread with a pitch of 4 mm and diameter 22mm. The coefficient of friction is…

A:

Q: A single cylinder marine engine has a compression ratio () of 6.75, a clearance volume of 1200 cm…

A: Compression ratio, r=6.75 Clearance volume, VC=1200 cm3 Length of stroke, L=500 mm Determine the…

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.