AP Physics Resources: Comments

Even though anonymous comments were allowed on this blog

earlier, I discontinued that facility few months back. Of course,

you can get your comments published on this blog if you

provide an identity. Below all posts you will find a ‘comments’

tab using which you can make your comment. Your comments

are always welcome. Please do not hesitate to make critical

comments. Here are a few comments  received:

Keydetpiper said…

I stumbled across your blog this morning; it looks like a great

resource. I’m teaching Physics C (mechanics only) for the first

time and I’m always looking for more information. Good stuff,

kep it up!

[Under the post dated 12^th May 2008:

alex said…

Very helpful thanks—now I understand the equations better.

[Under the post dated 31^st March 2008:

Physics B & C –Electric Circuits –Equations to be Rembered]

Amran Shahir Ismail said…

A blog on physics! I haven’t seen that before! I never liked

physics like I should have while I was in college. I don’t know

why. Just dropping by! Keep up the good work! I bet there

 are many people especially physics students finding your site

 very useful!

[Under the post dated 15^th November 2008:

roshanboy said…

All right I understood the formula of calculating the acceleration

 of a rolling body. Is there a formula for calculating the velocity

of a rolling body down the inclined plane?

[Under the post dated 1^st January 2008:

MV said…

Hello roshanboy,

To obtain the linear velocity down the plane, just substitute

the value of the acceleration in the equation of linear motion

 such as v = u + at or v^2 = u^2 + 2as. You can use the

energy relation, mgh = (1/2) mv^2 +(1/2)Iω² also to find the

 velocity. Here ‘h’ is the height of the inclined plane, ‘I’ is the

moment of inertia and ‘ω’ is the angular velocity which is v/R

where R is the radius of the rolling body. Don’t think of a

ready made formula for ‘v’.

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