
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 tank with a mass of \( m_1 = 3 \) kg rests on a cart with a mass of \( m_2 = 15 \) kg, which is being accelerated with an acceleration of \( a = 4 \, \mathrm{m/s^2} \). The coefficient of friction between the tank and the cart is \( \mu = 0.6 \). Determine the frictional force acting on the tank from the cart.

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