Please answer BOTH of the following questions: FIGURE 12.13 A before-and-after p

Question

Please answer BOTH of the following questions:

FIGURE 12.13 A before-and-after pictorial representation of the rod QUESTION 1 Consider the rod in Figure 12.13 on page 319. As the rod falls. the torque exerted by gravity about the hinge ... is always zero decreases stays the same. but isn't zero increases QUESTION 2 For a wheel which is rolling without slipping, which point is momentarily at rest? Select all correct choices. the contact point with the ground the center of mass the top of the wheel all points on the wheel

Explanation / Answer

1) Torque definition is:

t = F r sinø

where ø is the angle between the for force F and distance r.

For this case the angle is decreasing from 90 degree to zero degree, for this case the sine function also decreases

so the magnitude of the torque decreses

B) When you have a rolling motion without slipping the only point that is momentarily at rest is the contact point with the ground if this point is not at rest you have a slipping motion.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

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