Question

HELP!!!!!
For the image on the far left, what is the total net force on the object and in which direction?

A. 2000 N upwards

B. 400 N upwards

C. 400 N downwards

Image Links: http://curriculum.kcdistancelearning.com/courses/PHYSCIx-FN-A09/a/exams/EM-UnitExam/PSAFDN_Unit5_Exam_77q.jpg

Answer 1

b

Answer 2

@scherniak is right. I'll just justify his or her answer.
Let's assume that upwards is + & downwards is - (this is going to be our sign convention)

Ftens = + 1200 N (the + indicates the direction, which is positive in this case because of sign convention)

Fgrav = - 800 N (similarly, the - indicates the direction, which is negative in this case)

Fnet = + 1200 N - 800 N = + 400 N