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January 30, 2015

January 30, 2015

Posted by **Kayla** on Tuesday, November 6, 2012 at 4:02pm.

- Physics -
**Elena**, Tuesday, November 6, 2012 at 5:45pmFor m1: m1•a=T1

For m2: m2•a=m2•g – T2

For pulley: I•ε = M => I•a/R= (T2-T1)R => (T2-T1) = I•a/R²

a(m1+m2+ I/R²)=m2•g

a= m2•g/(m1+m2+ I/R²)

T1= m1•m2•g/(m1+m2+ I/R²)

T2 = m2•g -m2•a=...

- Physics -
**Kayla**, Tuesday, November 6, 2012 at 6:05pmI am geting .875 for my acceleration and its saying its wrong! Was your value this small?

- Physics -
**Elena**, Tuesday, November 6, 2012 at 6:31pmFor m1: m1•a=T1 (block m1=1 kg is on the surface )

For m2: m2•a=m2•g – T2 (m2=9 kg)

For pulley: I•ε = M => I•a/R= (T2-T1)R => (T2-T1) = I•a/R²

a(m1+m2+ I/R²)=m2•g

a= m2•g/(m1+m2+ I/R²) =9•9.8/{1+9+(0.3/0.25)}=7.885 m/s²

T1= m1•m2•g/(m1+m2+ I/R²)

- Physics -
**Kayla**, Tuesday, November 6, 2012 at 6:52pmFOr my Tension 1 I am getting 7.875 and its wrong, im so confused what im doing wrong!

- Physics -
**Elena**, Wednesday, November 7, 2012 at 7:34amT1=m1•a=1•7.885 = 7.885 N

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