Fundamental Problem 17.13 Part A The uniform 68-kg slender bar is initially at r

Question

Fundamental Problem 17.13 Part A The uniform 68-kg slender bar is initially at rest ona smooth horizontal plane when the forces are applied Eigure 1) Determine the acceleration of the bars mass center at this instant Express your answer to three significant figures and include the appropriate units ac-Value Units Submit My Answers Give Up Figure 1 of Part B Determine the angular acceleration of the bar at this instant Express your answer to three significant figures and include the appropriate units 20 N 0.75 m 0.5 m .75m . 2.18 11 rad 80 N Submit My Answers Give Up Incorrect, Try Again; 5 attempts remaining

Explanation / Answer

Part A:

Net force acting on the bar=80-20=60N

mass of bar=68 kg

acceleration = 60/68=0.88 m/s2

Part B:

net torque acting about center of rod= 20*0.75 + 80*1=95 Nm

mass moment of inertia of bar=mL2/12 = 68*32/12=51 kg-m2

angular acceleration = 95/51=1.86 rad/s2

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.