
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A mobile railroad platform with a horizontal base in the shape of a rectangle, measuring 10 meters in length and 4 meters in width, is being loaded with sand. The surface of the sand can form an angle no greater than 45 degrees with the plane of the base (otherwise, the grains of sand fall off). The density of the sand is 1500 kg/m³. Find the maximum mass of sand loaded onto the platform.

Present the answer in LaTex format: \boxed{Your answer}
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