Question

If the mass of a balloon is 300 kg and the lift force provided by the atmosphere is 3300 N, what is the net force on the balloon?

Answer 1

`"the solution is shown below."`

Explanation:

• Suppose P is the center of gravity.

• There are two forces acting on the P point. (These are symbolized as blue and red vectors.)

• You see that the vectors are opposite.

• To find the net force, we need to subtract the red vector from the blue vector

• Net force tells how balloons will behave.

• If the net force is zero, the balloon is either stationary or has a constant velocity (Newton's first law).

• If the net force is greater than zero, the balloon has a constant acceleration (Newton's second law).

• weight of balloon=m*g=300.9,81=2943 Newtons

• lifting force=3300 Newtons
• Net force=lifting force-weight of balloon
• Net force=3300-2943=357 Newtons.