Five
Givens
B = 18 m
Theta = 112o
Solve
By = 18*sin(112) = 16.68
Bx = 18*cos(112) = -6.74
The answer is D
Seven
theta = - 40o It's going clockwise. You just put the angle in your calculator as -40o
By = 15*sin(-40) = -9.64
Bx = 15*con(-40) = 11.48
Answer: A
Eight.
I'm going to answer this one as it is written.
Fx = F * cos(37)
Fx = 20N * cos(37)
Fx = 15.87 N The answer is A.
Fy is not calculated for this because Fy pulls Rover up. He's not going to like that very much. You have to know this when you are walking your dog and you pull him up at an angle. Part of what you are doing is choking him for no good purpose. That's part of the physics of everyday living.
