P2207_lecture_questions_force_fall2008

P2207_lecture_questions_force_fall2008 - Overhead views of...

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

View Full Document Right Arrow Icon
1 Overhead views of a block that lies on a frictionless floor are shown below. If the force magnitudes are chosen properly, in which situations is it possible that the block is either stationary or moving with constant velocity? F 1 (1) (3) (4) (2) F 1 F 1 F 2 F 2 F 3 F 1 F 2 F 3 F 2 A. (2) and (3) B. (2) and (4) C. (2), (3), and (4) D. All four Do stop pulling the cat's tail, Darling.“ "I'm not pulling Mummy, Kitty's pulling!" How does the magnitude of the force that Darling the daughter exerts on Kitty the cat compare with the force that Kitty exerts on Darling? A. F Darling on Kitty > F Kitty on Darling B. F Darling on Kitty = F Kitty on Darling C. F Darling on Kitty < F Kitty on Darling m Which of the following forces are 3rd-law interaction pairs? A. Weight W of mass m and tension T of rope B. W and gravitational force of mass m on earth C. Tension T and force of mass m on rope D. Two of the above E. Three of the above m F=mg a a=? A. 0 B. g C. >g D. insufficient information
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 m F a=g F=? A. 0 B. mg C. 2mg D. 3mg m m m 3 1 2 T 1 / T 3 =? A. 1/3 B. 1/2 C. 1 D. 2 E. 3 m 1 m 2 frictionless pulley a a=? A. 0 B. g C. m 1 g / (m 1 + m 2 ) D. m 2 g / (m 1 + m 2 ) E. (m 1 - m 2 ) g / (m 1 + m 2 ) m θ θ T T T=? A. mg B. mg /sin( θ ) C. mg / cos( θ ) D. mg / 2 sin( θ ) E. mg / 2 cos( θ )
Background image of page 2
m θ θ T T T ? A. 0 B. mg / 2 C. mg D. 2mg E. As θ→ θ→ θ→ 0 (i.e., the ropes approach horizontal), T ? W N T W x W y θ W x =? A. W cos θ B. W sin θ C. W tan θ D. W / cos θ E. W / sin θ ro p e What is the average angle θ of Buffalo St. between Eddy and Aurora Sts.? Aurora St. θ Eddy St. A. ~5 ° B. ~10 ° C. ~20 ° D. ~30 ° E. ~45 ° What is the acceleration of a cyclist if he coasts without pedaling down Buffalo St.? (Neglect air resistance and any other forces from friction) a Aurora St. )
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/27/2010 for the course PHYS 2207 at Cornell University (Engineering School).

Page1 / 10

P2207_lecture_questions_force_fall2008 - Overhead views of...

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

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