There’s frictional force acting on the sphere, which causes it to gradually slow down, and eventually come to a stop.
Air resistance doesn't appear in the formula for gravitational force, because it doesn't affect it. Mass does because it does.
Using the picture provided the forces are added together, because they are putting force on an object the same direction, thus the forces are added.
Answer:
49N
Explanation:
F=ma
We know the mass is 5kg, and since the ball is suspended on one cable, the acceleration is g, 9.8m/s^2
F=5kg*9.8m/s^2
= 49N
Hope this helps!