Answered: 4. An object is constructed of a…

4. An object is constructed of a material lighter than water. It weighs 50N in air and a force of 10 N is required to hold it under water. What is its density, specific weight, and specific gravity?

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter9: Mass And Mass-related Variables In Engineering

Section: Chapter Questions

Problem 35P

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.

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4. An object is constructed of a material lighter than water. It weighs 50N in
air and a force of 10 N is required to hold it under water. What is its
density, specific weight, and specific gravity?

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