Sir your videos make me understand every topic so clearly. Please post some videos on compound pendulum including center of percussion, suspension and oscillation. And also some review of the bar pendulum.
Ah! So the negative in the equation can be understood by understanding that in a spring, the force caused by the displacement acts in the direction opposite to the direction of the displacement. Thank you very much for the videos.
So, the force is always contrary to the displacement. Hence the need for a negative sign somewhere in the equation, to make the force and the displacement opposite in relation to each other? Thanks again for these videos!
We need to be a bit more specific. The direction of the force of the SPRING on the object is in the opposit direction of the position of the object relative to the equilibrium point.
but sir my question is to u that restoring force is always directed towards mean and opposite to the force we apply so the force should always be negative
Hook's law states that the deformation of an object (e.g. extension of a spring) is linearly proportional to the applied force. Thus your statement is correct.
A is the amplitude. It is the farthest distance the object will reach away from the equilibrium. It is a constant. x is a variable. It is the instantaneous distance away from the equilibrium point and can take any value between + A and - A.
The velocity of an object which is oscillating with simple harmonic motion is 4m/s when it is 3m from the central rest position and 3m/s when it is 4m. Determine the velocity of the object as it passes through the central position. Hello Sir can you please help me the formulae for this question.
This is an interesting problem indeed. Start with the equation v = sqrt((k/m)(A^2 - x^2) then square both sides: v^2 = (k/m)(A^2 - v^2) then plug in the values 4^2 = (k/m)(A^2 - 3^2) Do it again with the second set of values and then divide the one equation by the other and you get 16/9 = (A^2 - 9) / (A^2 - 16) Solve for A and you get A = 5 (that is the amplitude in meters) Then solve for k/m,
All equations in physics require a "constant of proportionality". In this case Hooke determined that the force required to stretch a spring was linearly proportional to the displacement from the equilibrium point. But the amount is determined by the strength of the spring, so each spring needs a constant so the exact distance can be found for each spring.
I attribute my 25 point physics exam increase on all previous scores to your excellent videos. Thank you!
Most of those points came from your hard work and dedication. Our videos just gave you a way to get there.
I dislike when I ask my teachers how the formula came to be and they never know. The world needs more teachers like you
Thank you. Glad you found our videos.
polite and very humble way of teaching.....loved it
thank you very much sir, was explained very clearly!
You are welcome.
your videos are very good and easy to understand sir,i salute you from india. ;D
Thank you. This is the basic for structural dynamics.
Yes it is.
I am doing soil dynamics and your explanation on SDOF system and its formula derivation is a godsend
Glad you found the videos helpful. (Interesting how it applies to soil dynamics).
Sir your videos make me understand every topic so clearly. Please post some videos on compound pendulum including center of percussion, suspension and oscillation. And also some review of the bar pendulum.
amazing as always sir
Thanku so much sir.. love and respect from India
Welcome to the channel!
Ah! So the negative in the equation can be understood by understanding that in a spring, the force caused by the displacement acts in the direction opposite to the direction of the displacement.
Thank you very much for the videos.
That is correct.
Yes sir
It helped me a lot.Thanks for such a good lecture.
So, the force is always contrary to the displacement. Hence the need for a negative sign somewhere in the equation, to make the force and the displacement opposite in relation to each other?
Thanks again for these videos!
We need to be a bit more specific. The direction of the force of the SPRING on the object is in the opposit direction of the position of the object relative to the equilibrium point.
ස්තූතියි ෆ්රොම් පී.ඊ. (යූ ඔ් කේ) (Thanks from Sri Lanka)
Welcome to the channel!
U are awesome sir!
love u sir and ur explantion ....... thanks so much .............. and REQUEST please upload vedio on 'ENTHALPY '
Here are some videos on entropy. (I'll have to do some on enthalpy). PHYSICS 30 ENTROPY th-cam.com/play/PLX2gX-ftPVXVhAmhi4e10J7PN6_1cvBYi.html
I legitimly thought, for a second there, u misspel entropy with enthalpy
Guess this laptop is the issue first, as the audio sounds bad, good lecture.
Effective for jee
but sir my question is to u that restoring force is always directed towards mean and opposite to the force we apply so the force should always be negative
Force is a vector, thus strictly speaking the direction of the force will then determine the sign.
I finaly got it thanks
Dear Sir, what i have studied is that F= kx realtion is hook's law and F= -kx tells us about restoring force. Isn't it correct?
Hook's law states that the deformation of an object (e.g. extension of a spring) is linearly proportional to the applied force. Thus your statement is correct.
Great 🥰
Thanks 🤗
Sir, what is difference between amplitude and x as they are both the distance from equilibrium position.
A is the amplitude. It is the farthest distance the object will reach away from the equilibrium. It is a constant. x is a variable. It is the instantaneous distance away from the equilibrium point and can take any value between + A and - A.
Thank you so much sir u helped me a lot
Good one
The velocity of an object which is oscillating with simple harmonic motion is 4m/s when it is 3m from the central rest position and 3m/s when it is 4m. Determine the velocity of the object as it passes through the central position. Hello Sir can you please help me the formulae for this question.
This is an interesting problem indeed. Start with the equation v = sqrt((k/m)(A^2 - x^2) then square both sides: v^2 = (k/m)(A^2 - v^2) then plug in the values 4^2 = (k/m)(A^2 - 3^2) Do it again with the second set of values and then divide the one equation by the other and you get 16/9 = (A^2 - 9) / (A^2 - 16) Solve for A and you get A = 5 (that is the amplitude in meters) Then solve for k/m,
Thanks Sir I will try this
thats pretty clever
What's the nessesity of spring const ,why not we simply write F=-x
All equations in physics require a "constant of proportionality". In this case Hooke determined that the force required to stretch a spring was linearly proportional to the displacement from the equilibrium point. But the amount is determined by the strength of the spring, so each spring needs a constant so the exact distance can be found for each spring.
@@MichelvanBiezen oh tq sir for the quick reply
thanks!
Superb
Thanks 🤗
the best
I love you Michel
Thank you for your kind words.