Question

Four forces are being applied to move an object to the left. Force 1 is pushing to the right at 200 N. Force 2 is pushing to the left at 500 N. Force 3 is pushing to the right at 100 N. Force 4 is pushing to the left at 50 N. What's the net force acting on this object?

A. −250 N
B. 850 N
C. 0 N
D. 250 N

Answer 1

The correct option is A.

Step-by-step explanation:

Force 1 is pushing to the right at 200 N.

`F_1= 200N`

Force 2 is pushing to the left at 500 N.

`F_2= -500 N` (negative sign indicates the direction of the force )

Force 3 is pushing to the right at 100 N

`F_3= 100 N`

Force 4 is pushing to the left at 50 N

`F_4= -50 N` (negative sign indicates the direction of the force )

Net force on the object:
`F_1+F_2+F_3+F_4`

`=200N +(-500N) + 100 N + (-50 N) = -250 N`

-250 N the net force acting on this object.

Answer 2

Four forces are being applied to move an object to the left.
Initial Force = 0N

Force 1 is pushing to the right at 200 N.
Force = 200 N

Force 2 is pushing to the left at 500 N.
Force = 200 - 500 = -300 N

Force 3 is pushing to the right at 100 N.
Force = -300 + 100 = -200 N

Force 4 is pushing to the left at 50 N.
Force = -200 - 50 = -250 N.

So the final answer is -250 N.
The correct answer is letter A. −250 N .