Answer:
100 kg
Explanation:
Two strings are used to hang the painting means the total weight of the painting is split into 2 the two string.
Each string has tension 490 N this means the total weight of the painting is
[tex]w=490\times 2=980\ \text{N}[/tex]
The tension of both the strings combimed will be the weight of the painting
Weight is given by
[tex]w=mg[/tex]
where,
m = Mass of the object
g = Acceleration due to gravity = [tex]9.8\ \text{m/s}^2[/tex]
Here
w = 980 N
[tex]980=m\times 9.8\\\Rightarrow m=\dfrac{980}{9.8}\\\Rightarrow m=100\ \text{kg}[/tex]
So, mass of the painting is 100 kg.
