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visits member for 2 years, 11 months
seen Feb 1 '13 at 9:49

Jul
2
awarded  Curious
Jun
20
awarded  Notable Question
Apr
8
awarded  Tumbleweed
Jun
14
awarded  Popular Question
May
14
awarded  Popular Question
Jan
19
awarded  Popular Question
Aug
15
asked What is a cyclic integral?
Jul
27
awarded  Yearling
Jul
6
comment How can I find the area of the shadow?
It is easy to see that the shadow is circle with center at C and radius EC or CD I'm sorry I do not see how this is the case. As @JosuéMolina mentioned, why can't it be an oval?
Jul
6
comment How can I find the area of the shadow?
@BenMillwood I'm sure the shape changes but the area might be constant.
Jul
6
asked How can I find the area of the shadow?
Jun
8
awarded  Caucus
Feb
1
comment Solve $\theta''+g\sin(\theta)=0$
@yoyo I simplified a step further & got this equation : $\frac{d\theta}{\sqrt{2C+2gcos\theta}}=dt$ I'm not sure I can integrate this.
Feb
1
awarded  Commentator
Feb
1
comment Solve $\theta''+g\sin(\theta)=0$
Thanks. Seems obvious now that you have shown it.
Feb
1
comment Solve $\theta''+g\sin(\theta)=0$
Can you explain how it is in separable form? I'm a beginner so please bear with me..
Feb
1
comment Solve $\theta''+g\sin(\theta)=0$
@yoyo Can't it be done without the small angle approximation? I wanted to derive a general equation for all cases. Anyways I don't know how to solve even with the approximation, so it'll be helpful even if you explain that method.
Feb
1
asked Solve $\theta''+g\sin(\theta)=0$
Jan
30
comment Why is an angle dimensionless?
Further, how can we extend this logic for angles in degrees? I don't think it is defined as a ratio of two lengths.
Jan
30
comment Why is an angle dimensionless?
@RagibZaman In that case does it mean that Dimensional Analysis cannot be applied to equations which involve ratios of 2 quantities with the same unit?