Correct Answer: Option a. 6150.64 N
Weight (w) is defined as:
w = mg
So, first we need to find the mass (m) of the steel block using its volume and density.
Mass = Density x Volume
So,
m = 0.08 x 7840 = 627.2 g
Using value of m and g = 9.807, we get
w = 627.2 x 9.807 = 6150.95 Newtons
Therefore, option a is the correct answer.
The slight difference is because the value of g is rounded of to 3 decimal cases.
