Answer:
24.9 N
Explanation:
Parameters Given:
Length of cylinder, h = 78.4 cm = 0.784 m
Diameter of cylinder = 2.3 cm = 0.023 m
Radius of cylinder, r = 0.0115m
Density of rod = 7800 kg/m³
Desnity is given as:
Density = mass/volume
Volume of cylindrical rod is:
Volume = pi * r² * h
= 3.142 * 0.0115² * 0.784
= 0.00326 m³
Therefore, mass can be gotten:
Mass = Density * volume
Mass = 7800 * 0.000326
Mass = 2.54 kg
Weight is given as:
Weight = mass * acceleration due to gravity
Weight = 2.54 * 9.8
Weight = 24.9 N
