Please Explain your answer Suppose you weigh 168 lbf. What is your mass in lbm?

Question

Please Explain your answer Suppose you weigh 168 lbf. What is your mass in lbm? Compare the value obtained in ( a ) with 168. Give a one sentence explanation as to why they arc the same or different. If you visit a planet where the acceleration of gravity is 3.68 m / s2 how much will you weigh? Express your answer in Newtons. An orifice meter is used to measure the flow rate in a pipe. The flow rate is related to the pressure drop by the following equation: U = C p / rho where u = fluid velocity p = pressure drop rho = density of the flowing fluid c = proportionality constant What are the units of c in the SI system? In the American engineering system?

Explanation / Answer

mass = 17.143
1b) They are different since in order to get weight a force you need to multiply the mass by the acceleration due to gravity.
1c) Weight = mass * acceleration = 17.143 (3.68) = 63.086 N

2) the units of the variables are U = m^3/s ?P = N/m^2 p = kg/m^3 So if put into the equation you get, U = cv(?P/p) m^3/s = cv((N/m^2)/(kg/m^3)) m^3/s = cv(((kg*m/s^2)/m^2)/(kg/m^3)) m^3/s = c v(((m/s^2)/m^2)/(1/m^3)) m^3/s = c v((1/m*s^2)/(1/m^3)) m^3/s = c v(m^3/(m*s^2)) m^3/s = c v(m^2/s^2) m^3/s = c(m/s) c = m^2      SI units
c = ft^2      American engineering system units
To get it into american engineering units you would do the same thing but with everything in american engineering units. Good Luck on your studies!

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