What is the required torque when the arm utilizing the triceps muscle accelerates a 3.7-kg object at 7.1 m/s²?

• A. $2.4$ $N\cdot m$
• B. $4.2$ $N\cdot m$
• C. $4.8$ $N\cdot m$
• D. $8.4$ $N\cdot m$

Answer: (D)