question= two forcesm one of 120 lbs and the other of 200 lbs, act on the same object at angles of 30 degrees and -30 degrees (respectively) with the positive x-axis. find the direction and magnitude of the resultant of these 2 forces
question= two forcesm one of 120 lbs and the other of 200 lbs, act on the same object at angles of 30 degrees and -30 degrees (respectively) with the positive x-axis. find the direction and magnitude of the resultant of these 2 forces
we have magnitude and direction, so we should be thinking vectors here.
draw a diagram showing the Cartesian axis and your vectors.
Let $\displaystyle F_1$ be the vector that represents the force of 120 lbs
and $\displaystyle F_2$ be the vector representing the 200 lbs
then the resultant force $\displaystyle F$ is given by: $\displaystyle F = F_1 + F_2$
i suppose you will know how to draw these vectors.
let $\displaystyle <x_1,y_1>$ be the terminal point of $\displaystyle F_1$
and $\displaystyle <x_2,y_2>$ be the terminal point of $\displaystyle F_2$
so, we would have $\displaystyle F = <x,y> = <x_1 + x_2,y_1 + y_2>$
once we have $\displaystyle <x,y>$ we can figure out what is required of us.
can you continue? do you even know what i am talking about?