Question

In which case will the object move due to an unbalanced force?

A.
Up = 300 N
Right = 300 N
Down = 300 N
Left = 250 N

B.
Up = 450 N
Right = 450 N
Down = 450 N
Left = 450 N

C.
Up = 550 N
Right = 200 N
Down = 550 N
Left = 200 N

D.
Up = 300 N
Right = 400 N
Down = 300 N
Left = 400 N

Answer 1

Just compare the values of forces applied in each direction. Up-Down , Left-Right
Which answer has unbalanced (different) values in any of the directions?

for example, in case B, since Left: 450N and Right : 450N
the left-right , or horizontal direction is balanced...
and the same for the vertical, up-down, direction, since: Up: 450N and Down: 450N
try with the other possible answers...

Answer 2

so c?

Answer 3

in case C: Up: 550N, Down: 550N, so it is balanced.
Left: 200N, Right: 200N, also balanced...
look for one that have different values for Left and Right...

Answer 4

a?

Answer 5

yes, since Left is different than Right, so it is unbalanced in the horizontal direction....