- #1

donniemsb_12

- 25

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this problem was discussed by our professor . but I am a lil bit confused on it ! thanks ! help !

FIVE COPLANAR FORCES ACT ON AN OBJECT AND THEIR RESULTANT !

our prof use this formula !

Bx=Bsin(degree)

By=Bcos(degree)

ANSER:

VECTORS X-COMPONENTS Y-COMPONENTS

A 19.0 0

B 7.5 12.99

C -11.31 11.31

D -9.53 -5.5

E 0 -22.0

Σx=5.66 Σy=-3.2

FIVE COPLANAR FORCES ACT ON AN OBJECT AND THEIR RESULTANT !

our prof use this formula !

Bx=Bsin(degree)

By=Bcos(degree)

ANSER:

VECTORS X-COMPONENTS Y-COMPONENTS

A 19.0 0

B 7.5 12.99

C -11.31 11.31

D -9.53 -5.5

E 0 -22.0

Σx=5.66 Σy=-3.2

**MY QUESTION IS : HOW TO KNOW IF WHAT PARTICULAR OPERATION TO BE USE ON EACH OF THE COMPONENTS ? WHEN WILL I USE THE SIN FUNCTION AND COSINE FUNCTION IN GETTING THE COMPONENTS? THANKS !**