It found on Earth atmosphere.
It is Real,Virtual,The Same Size, Inverted
PART A)
Here by force balance along Y direction

Force balance along X direction

now by torque balance



PART B)
now from above equations



now net reaction force of wall is given as


If you mean gravitational force, then it is GMm/r^2, which is G(68)(.91)/ (the distance between you and the laptop), where G is the universal gravitational constant
Hi there!
We can use the equation:

W = Work (J)
F = Force (N)
d = displacement (m)
We can rearrange to solve for force:

Plug in the givens:
