Use conservation of energy to determine the final speed of the masses after the heavier mass has fallen (starting from rest) 3.5 m .The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s.

final velocity will be equal to 8.28 m/sec

Explanation:

Let the mass is m

Height fro which it is fallen h = 3.5 m

Acceleration due to gravity

We have to find the final velocity of the mass

As the mass is dropped from rest so initial velocity is 0 m/sec

Using energy conservation

So

So final velocity will be equal to 8.28 m/sec

measuring things 1 litre of water