Question

What are the screw Jack for objective and observation

Answer 1

Answer:

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Engineering Tutorials

Lab Manual | To Calculate the efficiency of simple screw jack

October 24, 2009

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Objective: To Calculate the efficiency of simple screw jack.

Introduction

Machine: It is a device which is use for doing a particular work from receives energy in some available form.

Lifting Machine: It is a device which is use to overcome a force or load (W) applied at one point by mean of another force called effort (P).

Types of Machine:

Simple machine

Compound machine

· Simple Machine: Have only one point for the application of effort and one point for load.eg: Lever, screw jack etc.

· Compound Machine: has more than one point for the application of effort and for load. eg: Printing machine, milling machine, planer, shaper etc

Answer 2

Answer:

A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderately and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses.

Explanation: