final1withanswerkey

final1withanswerkey - Physics 1A Winter 2009: Makeup Final...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 1A Winter 2009: Makeup Final Version A 1 03.03.08 Closed book. No work needs to be shown for multiple-choice questions. 1 . A wheel initially has an angular velocity of 40 rad/s but it is slowing at a rate of 2.0 rad/s 2 until it comes to a stop. By the time it stops it will have turned through: (a) 80 rad. (b) 160 rad. (c) 200 rad. (d) 300 rad. -> (e) 400 rad. 2 . What centripetal acceleration does an 40 kg person experience when seated 16 m from the center of a merry-go-round whose angular speed is 0.50 rad/s? (a) 20 m/s 2 . (b) 10 m/s 2 . -> (c) 5 m/s 2 . (d) 30 m/s 2 . (e) 0.1 m/s 2 . 3 . Three identical massless rods are each acted on by two or more forces, all perpendicular to the rods and all equal in magnitude (with a force of magnitude F ). As you learned in Quiz 5, none of these rods is in static equilibrium. Now imagine that you can eliminate one of the fources on each rod. Which of the rods can be brought into static equilibrium? Choose one of the following statements below. (a) Rod 1. (b) Rod 2. (c) Rod 3. (d) All of these three rods can be in static equilibrium if one of the forces on each is eliminated. -> (e) None of the three rods can be brought into static equilibrium by eliminating just one of the forces acting on it. 4 . Mitch throws a 100 g lump of clay at a 500 g target, which is at rest on a horizontal surface. After impact, the target, including the attached clay, slides 2.1 m before stopping. If the rod 1 rod 2 rod 3 F
Background image of page 1

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

View Full DocumentRight Arrow Icon
Physics 1A Winter 2009: Makeup Final Version A 2 03.03.08
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/14/2009 for the course PHAR 1A taught by Professor Anderson during the Spring '09 term at UCSD.

Page1 / 5

final1withanswerkey - Physics 1A Winter 2009: Makeup Final...

This preview shows document pages 1 - 3. Sign up to view the full document.

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