Session 23: Modeling of Undamped Mass Spring system with some examples (Part I).

[@DrMathaholic]

At 11:29 , angle should be same for both cos and sine. Mistakenly at one place I wrote 2t and other place 3t. Please take a note of it.

[@rahulthorat639]

Ans. A cos(8t)+B sin(8t) A= 0.328 B= 3/8 Amplitude= 0.498 T= pi/4 F=4/pi

[@DrMathaholic]

Thank you Sanjay for posting the answer 😊

[@rahulthorat639]

Thank you sir for covering self study topic also.

[@DrMathaholic]

👍😀

[@vidhivivek2626]

great explanation thank you!

[@esrayeniaras9292]

Excellent explanation👍👏

[@DrMathaholic]

Thank you 😊

[@blaze102]

X(t) = 0.328 Cos(8t) + 0.375 Sin(8t) T=0.785 sec f= 1.273 sec

[@janeodonnell2107]

Calculate the frequency and period of undampened oscillation of an object weighing 375 g, if at displacement 5 cm from equilibrium point the force acting on this object is 300 mN. help please, thanks

[@erapdudon1475]

The unit for velocity should be ft/s not ft/s²

[@rokkamramya9562]

What is British matrix rule

[@DrMathaholic]

You mean, metric rule. They use Gallons instead of litres, pound or ounce instead of grams, foot/ inch instead of meters or centimetres and so on...

[@DrMathaholic]

1meter = 3.280839895 ft. So 9.8 m/s^2= 9.8* 3.280839895 ft/s^2= 32.1522 ft/s^2

[@khirodhkumar2785]

How to we get 32 by British Matrix rule , what is British Matrix rule

[@DrMathaholic]

1meter = 3.280839895 ft. So 9.8 m/s^2= 9.8* 3.280839895 ft/s^2= 32.1522 ft/s^2

[@khirodhkumar2785]

@@DrMathaholic tq so much Sir

[@DrMathaholic]

@@khirodhkumar2785 welcome...

[@user-ic6sd9kh7h]

Sir I don't get that ans....I got 96 is w*2 . Plz guide

[@DrMathaholic]

Which answer? Can you mention the timestamp?

[@sizzlingflavours..]

1.Equation of motion is x(t)=A cos(8t) + B sin(8t) 2.Time Period is T=2π/8 3.Frequency=8/2π

[@DrMathaholic]

Thank you Aakansha 😊

[@sizzlingflavours..]

@@DrMathaholic Sir, A=0.328 and. B=3/8