A 2 cm radius ball rests on a table as shown in the figure. Suppose we select th

Question

A 2 cm radius ball rests on a table as shown in the figure. Suppose we select the table as the reference plane, the bottom of the ball as its reference point, the /-axis along a vertical line, and the positive direction as pointing upward. What is the /-coordinate of the ballO 0.02 meter O 1.02 meter O 1.00 meter Which of the following statements about friction in this experiment is TRUE? C We approximate the energy lost through rolling friction to be zero. C We account for kinetic and static friction using the usual coefficients. C We approximate the static friction force in this experiment as zero. C We only consider kinetic friction in this experiment. If the ball has mass 0.10 kg and it is rolling so that the speed of its center is 0.75 m/s, what is its kinetic energy? J In this experiment, how do you determine the value of X? Your instructor will give you the value of X. You measure the value of X after your first attempt. You calculate X from known variables. You estimate the value of X based on your observation.

Explanation / Answer

1)
a) 0.02 meter

2)
a) we approximate the energy los through rolling friction to be zero.

3)

total kinetic energy = linear kinetic enrgy + rotational kinetic enrgy

= 0.5*m*v^2 + 0.5*I*w^2

= 0.5*m*v^2 + 0.5*(2/5)*m*R^2*w^2

= 0.5*m*v^2 + 0.2*m*v^2

= 0.7*m*v^2

= 0.5*0.1*0.75^2

= 0.0281 J

4) a)

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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