# How long will it take for the heavier mass to reach the floor? What will be the speed of the two masses when the heavier mass hits the floor?

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An Atwoodâ€™s machine has masses of 100 g and 110 g. The lighter mass is on the floor and the heavier mass is 75 cm above the floor.

An Atwoodâ€™s machine has masses of 100 g and 110 g. The lighter mass is on the floor and the heavier mass is 75 cm above the floor.

##### 1 Answer

#### Explanation:

If we say that the heavier mass is **magnitude** of the acceleration of the masses is:

In terms of tile, the relevant equation of motion for the heavier mass (at constant acceleration) is:

In terms of velocity, the relevant equation of motion for the heavier mass (at constant acceleration) is: