Question

For this question: why can't it be?
parallel section of OX = 10cos(30) + 2cos(45) + 5cos(70)
perpendicular section of OX = 10sin(30) +5sin(70) + 2sin(45)

Answer 1

it should be :

parallel section of OX = 10cos(30) - 2cos(45) - 5cos(70)

Answer 2

Notice that the forces 2N and 5N are acting opposite to OX direction, so you need to subtract their x components

Answer 3

thank you :)

Answer 4

can you help me with this question?
please

Answer 5

can you draw a free body diagram ?

Answer 6

what does the kgwt mean?

Answer 7

idk

Answer 8

Oh kg wt is same as Newton

Answer 9

"kg wt = N"

Answer 10

so how would i address this question?, at first it says its accelrating at 1m/s^2, but the question asks me to consider when it is stationary so a = 0 shouldn't mg = 2.5g m = 2.5 so the reading equals 2.5?
why is the ans 2.784?