What is the position of the mass at time t = 30 s ? A. -4.5 cm B. -2.5 cm C. 0 c

Question

What is the position of the mass at time t = 30 s ? A. -4.5 cm B. -2.5 cm C. 0 cm D. 4.5 cm E. 30 cm
When is the first time the velocity of the mass is zero? 0 s 2.0 s 8.0 s 10 s 13 s When is the first time the velocity of the mass is zero? 0 s 2.0 s 8.0 s 10 s 13 s
At which of these times does the kinetic energy have its maximum value? 0 s 8.0 s 13 s 26 s 30 s
At which of these times does the kinetic energy have its maximum value? 0 s 8.0 s 13 s 26 s 30 s
Multiple Choice Question 14.24 represents the motion of a mass on a spring. Part A What is the period of this oscillation? 12s O 24 s 36 s 48 s 50 s Submit My Answers Give Up Correct Part B What is the amplitude of the oscillation? 10 cm 2,5 cm O 45 cm 5.0 cm 9.0 cm Submit My Answers Give Up Correct Part C (cm) tes) -1 5 015 2 25 30 35 40 S50

Explanation / Answer

Q.N.- 14.24

Part A:- Time period is the basically time taken to complete the one cycle so from the wave from it is clearly shown that to complete one cycle it takes 24 seconds hence 2nd option is correct.

Part B:- Amplitude is the basically peak value of the waveforms..here in waveform peak value of disolacement is 4.5 cm . hence option third is correct.

Part C :-(i) the position( X in cm) of the mass is at 30 second is in negative axis on 4.5 cm. i.e At -4.5 cm Hence first option is correct.

(ii) from the wave form it is clearly shown that the wave goes to zero first time before 10 second. i.e on 8 second. Hence option 3rd is correct.

(iii) the maximum value of displacement is on 26 seconds that means it have more velocity accordingly more Kinetic energy. so fourth option is correct.

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