test093p3 - 12) A force of 4.0 N appli~d ~o a spring...

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Unformatted text preview: 12) A force of 4.0 N appli~d ~o a spring compresses it by 8.0 cm. What is the amount of work done to compress the spring by an additional amount of 5.0 cm? ~ A)50N/m B)0.50J C)2.0J ~ E)20J --=:;.J) __ 12) ·/3 )<1.-:: 0 ,0 ~ -t- 0,0)" M :::;-d f;t1 13) An object of mass 4 kg is thrown vertically upwards from ground level with an initial speed of 20 m/ s. Ignore friction and use g hits the ground? A)OJ J.. £. -= !!J!X 0,08"" ::::sa µ{l'11 L, -'X, W;- ).. k Yt;::.L(jc»(, C)400J /<:. ~ (1- 2. .;., 31 0)800J 0~ __ B " /.. /././ ~ h '~"""'e// ('UfJSpVVII.1)M 1.._ [4 o-~~ B) 200 J = (/0) {(d) 2- __ I 0) 100 J C) 8 m/s2 0) 12 m/s2 -=[200Jj A 14) _...:....-_ E) 0 k 15) _...:....-_ E) 6 m/s2 Sec- P~d cz. 416) An object is moving in a circular path with an angular speed of 1.52 rad/ s. How long does it take the object to complete one revolution? ~~ A) 2.07 s B) 118 s C) 8.26 s 0) 4.77 s ~ 17) A pulley has an initial angular speed of 12.5 rad / s and a constant angular acceleration of 3.41 rad/s2. Through what angle does the pulley turn in 5.26 s~~ A) 42.6 rad B) 19.3 rad C) 22.6 rad ~ --- \16~- Y?/s 4 ( r~-= b4 r 2(1 -r - I - C9f ~ f)~ -+ 0· tr -+ ~E?J 3 J2 E) 160 rad 18) Earth's radius is 6.38 x 106 m, and it completes one revolution every day. What is the tangential speed of a person standing on the equator? A) 148 m/ s B) 73.8 m/ s C) 232 m/ s (0) 464 m/ s\ E) 21.5 m/ s V{-:;:. 16) 17) - -~ 10 m/s2. C) -100 J B) 10 m/s2 I z mil Jl I 15) On a certain planet an object of mass m is moving with an initial speed of 4 m/ s. It comes to rest after traveling a horizontal distance of 10 m. If the coefficient of kinetic friction between the object a he surface is 0.2, what is the value of g on that planet? A) 4 m/s2 l..~ l')tJ) ~ .= f ::::t(4j({O) ('Ylet'S) . )~ ).;: RJ,i6 A . 14) An object of rhass 4 kg starts a rest from the top of a rough inclined plane of height 10 mas shown in Figure 3. If the speed of the object at the bottom of the inclined plane is 10 m/ s, how much work is done by the force of friction? Useg P' v2- ~ Gf ~f (eI: -J!:L Wwe.::: e -c,. j. /rt r / ff:~ E. r1f - ..):./' / 9 E)100J 12>, Usa. FIGURE 3 / J /3 8 10 m/s2. What is the kinetic energy of the object just before it B)200J f~ k ~ k (2. = 13)~ 18)-1L- ...
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This note was uploaded on 12/10/2011 for the course PHY 1111 taught by Professor Stencil during the Fall '11 term at University of Georgia Athens.

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