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Explanation / Answer

if uniform :

I = mr^2/2 = 2.3 x (0.112/2)^2 /2 =3.61 x 10-3 kg.m^2

using h = ut + at^2/2

1.4 = 0 + a x 0.76^2 /2

a = 4.85 m/s2

now , on book : 1.4g - T = 1.4 x 4.85

T = 6.93 N

on pulley ,

T .r = I x a/r

6.93 x (0.112/2)^2 / 4.85 = I

I = 4.48 x 10-3 kg.m^2

no pulley is not uniform

I is greater , so mass is towrads rim .

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