touchNOF“ 72| 1:09 PMPHYS220_Spring-20-21...PHYS220 _ Spring/20-21 _ Practice Sheet-1 _ Keys1) A0.1 kg object oscillates as a simple harmonic motion along thex -axis with a frequency f = 3.185 Hz.At a position x1, the object has a kinetic energy of 0.7 J and a potential energy 0.3 J. The amplitude ofoscillation, A, is:(a) 0.12 m(b)0.22 m(c) 0.31 m(d)0.42 m2) A block of mass m is attached to a spring with force constant, k and oscillate at a frequency f. If themass is changed to m' = m/2, and the spring force is changed to k' = 2k, then the new frequency f' ofthe oscillation would be,(a) f' = 2f(b)f' = f(c) f' = f/2(d)/' = 4fThe following given is for questions 3 and 4:A block of mass m = 2 kg is attached to a spring with spring constant k = 200 N/m, and set tooscillates on a frictionless horizontal surface. At time t = 0 its position is x, = 0 and its velocity isvo = +5 m/s.3) Which of the following is true about the oscillation amplitude and the phase constant, p:(a) A = 0.5, o = a/2(b)A = 0.5, 0 = -7/2(c) A = 0.25, 9 =x/2(d)A = 0.25, 9 = -x/24) When the block's velocity has the value v = v,may/2, then its position has the possible values of:(a) x = +(3/4)A(b)x = ±A/2(c) x = ±(v3/2)A(d)x = ±(vZ/2)A5) A block-spring system oscillates in a simple harmonic motion on a frictionless horizontal table. Itsdisplacement varies with time according to x(t) = 0.2 cos(2t – n/4). The earliest time the particlereaches position x = 0.1 m is(а) t -24(b) t =S2447m(c) t =247m(d) t =126) Consider a bob attached to a vertical string. At t = 0, the bob is displaced to a new position where thestring makes -8° with the vertical and is then released from rest. If the angular displacement e(t) iswritten as a cosine function, then the phase constant o is:(а) -п/2(b)0(c) +n/2(d)n7) A bob attached to a cord is moved to the right where its vertical position is 1.05 cm above thesauilibrium position and is then given an initial speed of 0the values of the mavimum

Name: touchNOF“ 72| 1:09 PMPHYS220_Spring-20-21...PHYS220 _ Spring/20-21 _
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Description: touchNOF“ 72| 1:09 PMPHYS220_Spring-20-21...PHYS220 _ Spring/20-21 _ Practice Sheet-1 _ Keys1) A0.1 kg object oscillates as a simple harmonic motion along thex -axis with a frequency f = 3.185 Hz.At a position x1, the object has a kinetic energy of