Question

Need help on number 5. Super complex. Have had some tutors that can’t answer.

Answer 1

E. -23.254 N m

Step-by-step explanation:

We can represent the situation with the following diagram

Then, the net torque is equal to the torque exerted by each force where it is positive if the rotation is counterclockwise and negative otherwise. Since the torque is equal to the force times the distance to the pivot, we get:

`\begin{gathered} \tau_(net)=-(4\text{ N\rparen\lparen2.2 m\rparen - \lparen11 N\rparen\lparen1.4 m\rparen + \lparen0.43 N\rparen\lparen2.2 m\rparen} \\ \tau_(net)=-8.8\text{ Nm -15.4 Nm + 0.946 Nm} \\ \tau_(net)=-23.254 \end{gathered}`

Therefore, the answer is

E. -23.254 N m