in class test 2 - Version 084/ABBBA inclasstest 02 turner...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Version 084/ABBBA inclasstest 02 turner (57340) 1 This print-out should have 2 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points A coin is placed 32 cm from the center of a horizontal turntable, initially at rest. The turntable then begins to rotate. When the speed of the coin is 110 cm / s (rotating at a constant rate), the coin just begins to slip. The acceleration of gravity is 980 cm / s 2 . What is the coefficient of static friction be- tween the coin and the turntable? 1. 0.594652 2. 0.432173 3. 0.408163 4. 0.398288 5. 0.492711 6. 0.385842 7. 0.363145 8. 0.474882 9. 0.318878 10. 0.524781 Correct answer: 0 . 385842. Explanation: The normal force on the coin is N = mg . The force provided by friction immediately before slippage is given by f = N = mg . At this moment the centripetal acceleration (there is no tangential acceleration) provides a force F = mv 2 r ....
View Full Document

Page1 / 2

in class test 2 - Version 084/ABBBA inclasstest 02 turner...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online