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hndalama

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## Homework Statement

An Atwood machine is a rope that passes over a pulley with a block attached to each end of the rope so that the blocks are not in contact with the floor. The frictionless axle of the pulley is oriented horizontally, and the rope is vertical save where it makes contact with the pulley. Assume the rope has no weight. The pulley is a uniform disk with a moment of inertia of 0.313 kg m² and a diameter of 0.5 meters. The first block has a mass of 10 kg, and the second block has a mass of 6 kg. Begin with the blocks at rest and at the same height. What is the angular acceleration of the pulley?

## Homework Equations

net torque = Ia

a= angular acceleration and I=moment of inertia

m= 10kg

M= 6 kg

## The Attempt at a Solution

mg0.25 - Mg0.25 = Ia

0.25g(m-M) = Ia

0.25g*4 =0.313a

a=31.3

My answer is marked wrong but what's wrong with it?