Question

An object of mass 11kg is falling in air and experiences a force due to air resistance of 35N. Determine the magnitude of net force acting on the object.

Answer 1

Answer:

The net force acting on the object is 72.8 Nw

Explanation:

Net Force in Free Falling Objects

When an object is falling in the air, the default force applied to it is the gravitational force or its weight. If air resistance is considered, then the net force acting on the object must take into consideration two opposed forces

$F_n=W-F_a$

Where $F_n$ is the net force, $F_a$ is the air resistance, and W is the weigh of the object

$W=mg$

$F_n=mg-F_a$

$F_n=(11)(9.8)-35=72.8\ N$

The net force acting on the object is $\boxed{72.8 Nw}$