Physics 16 Simple Harmonic Motion (11 of 19) v(x)=? When x=(1/2)A

In this video I will find v=? when x=(1/2)A, and x(t=4s)=?, given k=100N/m, m=200g, A=20cm.

Next video can be seen at:

[irinabursill]

How come this video has been watched 24000 times, and there are only 250 likes? Students, show some gratitude and appreciation.

[johntindell]

Thank you so much. A very intelligible way of teaching. You are an instructional expert. might drop out of the physics major without your profound contribution!

[mido]

I am trying to clarify the two equation whether using the trig function or conservation of energy. I saw your first video and I quite understand how, I hope I would practice more for clarification. Thank sir

[lollabytaskmaster]

can you solve this question please
A piston in a gasoline engine is in simple harmonic
motion. If the extremes of its position relative to its center
point are & 5.00 cm, find the maximum velocity and
acceleration of the piston when the engine is running at
the rate of 3 600 rev/min

[nicolaslandeourtecho]

How we know when use kg or g? Because when I use g the result of the velocity is totally different

[Fraidoon]

At 4:05, the k was in newton/meter, but we used cm for amplitude. Shouldnt we use the same unit as constant k? meter, instead of cm?