Concept explainers
A person weighs 30 lb on the moon, where
(a)
The mass of the person.
Answer to Problem 1.1P
The mass of the person is 5.64 slug.
Explanation of Solution
The person weighs 30 lb on the moon, where
Calculation:
Weight of one unit of mass is:
Conclusion:
The mass of the person is calculated using one unit of mass and then the ratio is calculated.
(b)
The weight of a person on earth.
Answer to Problem 1.1P
The weight of a person on earth is 181.61 lb.
Explanation of Solution
The mass of the person is 5.64 slug.
Calculation:
Weight of one unit of mass is,
Conclusion:
The weight of the person on earth has calculated using one unit of mass and then multiplied with the mass of a person.
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Chapter 1 Solutions
International Edition---engineering Mechanics: Statics, 4th Edition
- A person weighs 30 lb on the moon, where g = 32 ft/s2.Determine (a) the mass of the person; and (b) the weight of the person on earth. Convert the following: (a) 400 lb ft to kN • m; (b) 6 m/s to mi/h;(c) 20 lb/in.2 to kPa; and (d) 500 slug/in. to kg/m. The kinetic energy of a car of mass, m moving with velocity v is E = mv2/2. If m = 1000 kg and v = 6 m/s, compute E in (a) kN · m; and (b) lb ft. A differential equation is d^2/dt^2=Ay^2=byt where y represents a distance and 1 is time. Determine the dimensions of constants A and B for which the equation will be dimensionally homogeneous. Calculate the gravitational force between the earth and the moon in newtons. The distance between the earth and the moon is 384 x 103 Note: mass of earth = 5.9742 X 1024 kg, radius of earth = 6378 km, mass of moon = 0.073 483 x 1024 kg, radius of moon = 1737 km.arrow_forwardA container is filled with oil and water. The weight of the same container when half filled with a liquid (s=1.95) alone is 90kN. If the volume of water is twice that the volume of oil, find the specific gravity of the oil so that the weight of the container when fully filled with oil-water combination is the same when half filled with the aforementioned liguid.arrow_forwardIf a resultant force is applied to one mass on a frictionless surface, it accelerates at 6 m/s2. When the same resultant force is applied to three masses that are combined together, thenarrow_forward
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- For the 3500-lb car, determine (a) its mass in slugs, (b) its weight in newtons, and (c) its mass in kg. slug = lb-/ftarrow_forwardWhat is the weight of an astronaut with a mass of 180 LBM on the moon, where g=5.32 ft/s2?arrow_forwardDetermine the weight of a body that occupies 200 m3 if its specific volume is 10 m3/kgarrow_forward
- What is the mass of an object that falls freely under the influence of gravity from an elevation of 100 m above the earth's surface? The downward velocity is 100 m/s and strikes the earth at 109.4m/s. Take g = 9.81 m/s2. Ans. m=40kgarrow_forwardthe air, oil, and water system in Figure is at 20 ° C. Knowing that gauge A indicates an absolute pressure of 15 lbf / in2 and that gauge B indicates 1.25 lbf / in2 less than gauge C, calculate (a) the specific weight of the oil in lbf / ft3 and (b) the absolute pressure marked by gauge C in lbf / in2arrow_forwardA tank containing oil has a diameter of 10 ft and a height of 5 ft. (a) If the oil has a specific gravity of 0.85,determine (a) its weight in pounds and in newtons at a location where the acceleration due to gravity is 31 ft/s2. (b) Calculate the its mass , in slugs. (c) If this oil is located on the moon’s surface where the acceleration due to gravity is approximately 5.332 ft/s2, determine the weight of oil.arrow_forward
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L