On a part-time job, you are asked to bring a cylindrical iron rod of density 780

Question

On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 88.1cm and diameter 2.25cm from a storage room to a machinist. Calculate the weight of the rod, w. The acceleration due to gravity, g = 9.81m/s2 . Express your answer numerically in newtons. w =   N   On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 88.1cm and diameter 2.25cm from a storage room to a machinist. Calculate the weight of the rod, w. The acceleration due to gravity, g = 9.81m/s2 . Express your answer numerically in newtons. w =   N   w =   N   w =   N   w =   N  

Explanation / Answer

apply density =mass/volune

so mass m = DV

m = 7800 *pi r^2h

m = 7800 * 3.14 * 1.125*1.125*10^-4 * 0.881

mass = 2.738 kgs

weight = 2.738*9.81

W = 26.76 N

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