Question

Isn't the net external force of an object always 0?

Answer 1

only if it's not accelerating

Answer 2

well a net external force on the car is the same as the Sum of the forces on the car which should always equal zero.. here's my question because when i read net external forces i read the sum of all the forces

Answer 3

not accounting their signs

Answer 4

The sum of forces equals zero only in equilibrium.

Answer 5

say in calculus when you had a curve that went below the line , the net area would be the (positive area)+(negative area)

Answer 6

so now accounting newtons law, for every force there is an oppositve equal force

Answer 7

wouldn't the net external force on this object be

\[F_o-f_s-T=0\]

Answer 8

Only if it is not moving.

Answer 9

since external forces would be(static friction, tension, and the object

Answer 10

what if it's moving

Answer 11

Friction becomes kinetic and motion will depend on which force is greatest.

Answer 12

ah you're asking about action-reaction pairs?

Answer 13

this is what i'm asking about. when i hear net external force i think of the sum of the forces acting upon object 1