Numerical Problems Chapter 7 Oscillation l First Year Physics Federal Board KPK Syllabus

1. A force of 0.4N is required to displace a body attached to a spring through 0.1m from its mean position. Calculate the spring constant of spring.
2. A pendulum clock keeps perfect time at a location where the acceleration due to gravity is exactly 9.8ms-2. When the clock is moved to a higher altitude, it loses 80s per day. Find the value of g at this new location.
3. Calculate the length of a second; pendulum having time period 2s at a plate where g=9.8ms-2.
4. A body of mass m, suspended from a spring with force constant k, vibrates with f1. When its length is cut into half and the same body is suspended from one of the halves, the frequency is f2. Find out f1f2-1.
5. A mass at the end of spring describes S.H.M with T=0.4s. Find out a ⃗ when the displacement is 0.04m.
6. A block weighting 4kg extends a spring by 0.16m from its un-stretched position. The block is removed and a 0.50kg body is hung from same spring. If the spring is now stretched and then released, what is its period of vibration?
7. What should be the length of simple pendulum whose time period is one second? What is its frequency?
8. A spring, whose spring constant is 80nm-1 vertically supports a mass of 1kg is at rest position. Find the distance by which the mass must be pulled down, so that on being released, it may pass the mean position with velocity of one metre per second.
9. A 800g body vibrates S.H.M with amplitude 0.3m. The restoring force is 60N and the displacement is 0.3m. Find out (i) T (ii) a ⃗ (iii) v ⃗ (iv) K.E (v) P.E when the displacement is 12cm.
10. Find the amplitude, frequency and time period of an object oscillating at the end of a spring, if the equation for its position at any instant t is given by x=0.25cos(π/8)t. Find the displacement of the object after 2s.

[Sunny-ev]

sir apna numerical 9 ma velocity find krta wa x ki value 0.12 kesa dali h wo to P.E find krta wa ni dalni thi?

[fahmeedworld]

sr reduced syllabus k mutabik plz conceptual or numericals bata daan plzz.. fbise board

[muqadaskhan]

20:32 sir app m ki jagga 8 q put kr raio hain instead of 0.8 ??

[ha_]

20:56 why did we use this formula for P.E? why didn't we used K.E=mgh?

[aqua_regia]

Sir!
Plz explain that how you have considered m=8kg in numerical#9
Explain the relation between sping constant and length of pendulum
Kindly, explain them so that we will be able to clear our concepts

[hammadyt]

23:16 per time period 16Hz ho ga ya 16sec

[muqadaskhan]

sir jis 200 ki app bat kr rai hain 19:50 main wo 60/0.3 =200 aya hai jazakalla
h

[raniakhan]

Sir numerical 9 ke part 4 mn Jo apne mass 8 put kia jbke data mn 0.8 h wo 8 kaha se likha apne

[movetoamazon]

Well done ✅ sir great job..!!!!
May Allah bless you..

[noormuhammad]

Sir spring constant means k KO value given nahi h to ap ny 200 q laga ya h

[cuddle_fairy]

Sir numerical 9 me hamry pas m=0.8 ha or Ap nai solution me 8 likha ha kasy???🤔🤔🤔

[MuhammadMushtaq-zh]

SubhanaAllah May Allah SWT bless you more 🌺✨

[SajjadKhan-ljxj]

Sir in Numericals 7.9 part b why have you put the x 0.12m like there is a displacement value 0.30 m plz can you explain it

[imanfatima]

Sir why have we taken m=8kg in numerical#9?

[nusratanjum_]

sir question no 5 mn apny oumega ka konsa formula lgaya hai ?

[aroobashabbir]

Sir Kuch chezyn clear nu ho rahi or ap sirf tareefon ky hi reply kar rahy questions ka bi kar diya Karyn please

[mehakzahra]

A.o.A sir chapter 7 kay comprehensive questions b upload kary plzz

[muhammadkashif]

Sir 9 numerical mein K.E find krtay waqt ap nay mass 8 kg q liya 0.8 kg q nai liya?

[kashaf.k]

Sir in numeric 9 why did u took acceleration negative?

[muhammadsaqlain]

Sir chapter no 2 ka numaricles upload kar dana