Unformatted text preview: 10) To determine the location of the center of mass of a car, the car is driven over a scale. When the 10) C
front wheels are over the scale, the weight recorded by the scale is 5800 N, and when the rear
wheels are over the scale, the scale reads 6500 N. The distance between the front and rear wheels
is 3.20 m. How far behind the front wheels is the center of mass located? A)182m 9 Q B)0845m m D) 1.50m E)1.59m
lefﬁymf '{DZNS O (abau CM) £[N+”b): Eff/jail ﬁlial/511,): 0 Q N , an! L l )JL N,Q,+N1,Q 2’ ”Tl/QM F‘Wi' rear ‘ﬂytﬂ lNAthlgﬂio {5'00 (3“) 
“W /\/t / 1' D 11) A 40. 0— —kg child running at a speed 3. 00 /m/ s jumps on a stationary playground merry— goround 11)
at a distance 1.50 m from the axis of rotation of the merry— go—round. The child IS traveling tangential to the edge of the merrygoround which has a 600 kg m2 moment of inertia about its axis of rotation as she is running. What is the angular speed of the merrygoround after the V4:
child jumps on it? , _,
A)3.14rev/s LI _ L ‘F/ Z'I‘' Im 4/ 7! Icwtl h1 3722:3791: .1: W MI W W“ l U L M0 (V (4°) ”laa) '2"
L f» ,: .11: W: /"F’; 415
F: Iii/«Ll: If Iml'WRl 600+ #0 TS re 12) If the amplitude of the motion of a simple harmonic oscillator' is doubled, by what factor does 12) (—AL the fre uency of the oscillator change?
B) 2 C) 1 /2 D) 1 / 4 E)4 =Afté/u43 I A «1.! luff) a” ”0+ (ta/Q 7’0 9/ 13) A mass on a spring undergoes SHM. When the mass is at maximum displacement from 13) C
equilibrium, its instantaneous acceleration )
f f
A) is less than maximum, but not zero. X r A as (w + 9 U +~ 0 B iszero. a = “AWL/OSKP'I')
m » 2.
D cannot e e ermined without mass information given. X f A / an"; 5 A W E) cannot be determined without spring constant information given. Max 14) The position of a mass that is oscillating on a spring is given by x = (12.3 cm) cos[(1.26 rad/ 5)]. 14) C
What is the speed of the mass whent = 0.805 s? gr E A) 8.19 cm/s X 5 A (us (wt) ...
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