Greenrune113 Greenrune113

17-04-2018
Mathematics

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Q5 Q19 Choose the correct formula for the displacement d from the rest position of the object attached to the spring at time t.

Q5 Q19 Choose the correct formula for the displacement d from the rest position of the object attached to the spring at time t class=

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nustopocru nustopocru

18-04-2018

t=0, d=0 so ans B is wrong

t=0, dd/dt <0 as it is propelled downward so ans C is wrong

ang vel = 2[tex] \pi [/tex] / period

= 2[tex] \pi [/tex] / 4.5

= 4[tex] \pi [/tex] / 9

so D is the correct answer

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