A screw jack was used to replace the tire of a dumper. The jack had to support a load of 2000 kgf. The following are the parameters of screw jack: Mean diameter = 30 mm Length of lever = 500mm Coefficient of friction = 0.15 Inclination angle = 5⁰ Find the torque required to raise the dumper.

A screw jack was used to replace the tire of a dumper. The jack had to support a load of 2000 kgf. The following are the parameters of screw jack: Mean diameter = 30 mm Length of lever = 500mm Coefficient of friction = 0.15 Inclination angle = 5⁰ Find the torque required to raise the dumper.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

A screw jack was used to replace the tire of a dumper. The jack had to support a load of 2000 kgf. The
following are the parameters of screw jack:
Mean diameter = 30 mm
Length of lever = 500mm
Coefficient of friction = 0.15
Inclination angle = 5°
Find the torque required to raise the dumper.

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