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quiz7_soln_fall01

# quiz7_soln_fall01 - Name 50 LU‘ﬁ O N Quiz 7 Plane...

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Unformatted text preview: Name: 50 LU‘ﬁ O N Quiz# 7 Plane Motion of Ri SYSTEM MOMENTA; + SYST. EXTERNAL IMPULSE” SYSTEM MOMENTA; 'd Bodies: Energ Methods L= mv Linear impulse = I]? d1 H = In) Angular impulse =IMdt The block shown has a mass of 6 kg. It is attached to a cord that is wrapped around the periphery of a 20 kg disk that has a moment of inertia IA = 0.40 kg m2. If the block is initially moving downward with a speed of 2 m/s, determine its speed in 3 s. Neglect the mass of the cord. Tic 7;: v ’2 w/ 2 )L 9 L04 1 02 7 IO/Lacl/S 1m! ‘ “I? -.-.. {y . ., . V j “)2 '2 Iii. 40 X a) a \$1 (3) i I L 07), Jim/c 74km (/ngwé) {WW uh) Whoﬁ Ty-) 0'; 0.6 \$1400) + 3m?) T 2 0.2, 4’52 ’2) T1 aﬁ’gz—Zr 662) + (7/ 4%))3 , ,5ng ’6 V32 1 32 + “35 '3 ‘W Liygl 7 [6.03 M/S ‘L ‘W +ﬂ 2m» + (Wéﬁ7)V+ (2fo 7 if“); 440\$ L/—\/—4 Want va/Jr/mry 0715 2%? an, 58,}14— g I; (meow 6 M02) + 6(7‘8'Xo.2>3 v 0.4, A %L 7 (3'03 W/S Iv] (/5, 0.9.. 7a ﬂab/“45%;”, + 6 [0.2) [1/61 ...
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