Question

5 the free - body force diagram below represents two forces, f1 and f2, acting on a hot air balloon as it rises through the air. f1 = 1100 n f2 if the net force acting on the balloon is 120 n upward, what is the magnitude of f2? a 980 n b 1100 n c 1200 n d 1220 n

Explanation:

Step1: Define net - force formula

The net force $F_{net}$ acting on an object is given by $F_{net}=F_1 - F_2$ (assuming upward forces are positive and downward forces are negative). Here, $F_1$ is the upward force and $F_2$ is the downward force.

Step2: Rearrange the formula to solve for $F_2$

We can rewrite the formula as $F_2=F_1 - F_{net}$.

Step3: Substitute the given values

We know that $F_1 = 1100\ N$ and $F_{net}=120\ N$. Substituting these values into the formula $F_2=F_1 - F_{net}$, we get $F_2=1100 - 120$.

Step4: Calculate the value of $F_2$

$F_2 = 980\ N$.

Answer:

A. 980 N