{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Ch07 - Chapter 7 Rotational Motion and the Law of Gravity...

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 7, Rotational Motion and the Law of Gravity 6. A 0.30-m-radius automobile tire accelerates from rest at a constant 2.0 rad/s 2 over a 5.0-s interval. What is the tangential component of acceleration for a point on the outer edge of the tire during the 5-s interval? a. 33 m/s 2 b. 6.7 m/s 2 c. 0.60 m/s 2 d. 0.30 m/s 2 7. A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s 2 . What is its angular speed at the instant it goes through an angular displacement of 4.2 rad? 8. A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s 2 . What is the time interval required for it to reach a 4.2-rad displacement after starting from rest? 9. A 0.40-kg mass, attached to the end of a 0.75-m string, is whirled around in a circular horizontal path. If the maximum tension that the string can withstand is 450 N, then what maximum speed can the mass have if the string is not to break? a. 370 m/s b. 22 m/s c. 19 m/s d. 29 m/s 10. Two satellites are monitored as they orbit the Earth; satellite X is eight times as far from the Earth’s center as is satellite Y. From Kepler’s third law one may conclude that the period or revolution of X is what factor times that of Y? 76
Chapter 7, Rotational Motion and the Law of Gravity 11. A point on the rim of a 0.30-m-radius rotating wheel has a tangential speed of 4.0 m/s. What is the tangential speed of a point 0.20 m from the center of the same wheel? a. 1.0 m/s b. 1.3 m/s c. 2.7 m/s d. 8.0 m/s

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 14

Ch07 - Chapter 7 Rotational Motion and the Law of Gravity...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online