Question

a disc like reel on massless thread unrolls itself while falling vertically downwards the acceleration of its fall is

Answer 1

let T is the tension in the string

net torque = I*a1 (a1 = angular acceleration)

T*R = 1/2MR^2*a/R (I(for disk) =1/2MR^2 & a = R*a1)

T = Ma/2

as it is falling downwards

Mg - T = Ma

Mg - Ma/2 = Ma

Mg = 3Ma/2

a = 2g/3

Hope it will help u!!

Answer 2

Answer:

a disc like reel on massless thread unrolls itself while falling vertically downwards the acceleration of its fall is

In the event that mass of disc(cylinder like reel) is viewed as it were. at that point

Torque condition, compute torque because of pressure about the middle, T X R = I x rakish speeding up

Power condition, mg – T = M a

Ascertain, and discover the increasing speed..

IF>> mass of the string is given and as it is diminishing, at that point idea would be something else.