On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3 , length 84.5 cm and diameter 2.40 cm from a storage room to a machinist. Calculate the weight of the rod, w. Assume the free-fall acceleration is g = 9.80 m/s2 .

29.22 N

Explanation:

Parameters given:

Density = 7800 kg/m³

Diameter of rod = 2.4cm = 0.024m

Radius = 0.012m

Length = 84.5cm = 0.845m

To find the weight, we must find get the mass.

Density is given as:

Density = mass/volume

Therefore, mass is:

Mass = density * volume

Volume of the cylindrical rod is:

Volume = pi * r² * h

Volume = 3.142 * 0.012² * 0.845

Volume = 0.0003823 m³

Mass = 7800 * 0.0003823

Mass = 2.982 kg

Weight = m * g

Where g is acceleration due to gravity

Weight = 2.982 * 9.8 = 29.22 N

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!

c. magnitude and direction