roblem 15.16 7 of 13 > Part G A 265 g mass attached to a horizontal spring oscil

Question

roblem 15.16 7 of 13 > Part G A 265 g mass attached to a horizontal spring oscillates at a frequency of 2.20 Hz . At t = 0 s the mass is at x= 5.00 cm and has uz =-45.0 em/s. Determine: The total energy. Express your answer to three significant figures and include the appropriate units. 9.01x102 J Previous Answers Submit Correct Part H The position at t= 2.80 s Express your answer to three significant figures and include the appropriate units. 4.58 cm Submit revious Answers Request Answer X Incorrect: Try Again; no points deducted

Explanation / Answer

mass, m=265*10^-3 kg

frequency, f=2.2 Hz

Amplitude, A=5cm =0.05 m

speed, vx=-45 cm/sec

b)

use,

x=A*cos(w*t)

x=5*cos(2pi*f*t)

x=5*cos(2pi*2.2*2.8)

x=3.902cm

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