Alterra Physics: Space Station Rpm, G Force and Radius Calculator

How fast does a space station need to spin to generate 1G? Copy and paste the calculator below into your website.

            > STATION_RPM_FOR_1G.EXE
            [ CLICK TO EXPAND ]
        

// COPY THE BLOCK BELOW TO YOUR WEBSITE:

<div class="alterra-embed-wrapper" style="width: 100%; display: flex; justify-content: center; padding: 20px 0; background: transparent;">
    
    <div id="alterra-calc-container" style="background: #0a0f1e; border: 1px solid rgba(0, 212, 212, 0.3); padding: 25px; font-family: 'Rajdhani', sans-serif; color: #c8d8e8; width: 100%; max-width: 450px; border-radius: 8px; box-shadow: 0 0 25px rgba(0, 212, 212, 0.15); margin: 0 auto;">
        
        <h2 id="calc-title" style="color: #00d4d4; text-transform: uppercase; letter-spacing: 2px; margin-top: 0; font-family: 'Share Tech Mono', monospace; text-align: center; font-size: 1.2rem;">Centripetal Force Analyzer</h2>
        
        <div style="margin-bottom: 20px; border-bottom: 1px solid rgba(0, 212, 212, 0.1); padding-bottom: 15px;">
            <label style="display: block; font-size: 0.7rem; color: #4a6070; text-transform: uppercase; margin-bottom: 5px;">Analysis Mode</label>
            <select id="calcMode" onchange="updateLabels()" style="width: 100%; background: #05080f; border: 1px solid #00d4d4; color: #00d4d4; padding: 10px; font-family: 'Share Tech Mono', monospace; cursor: pointer;">
                <option value="baby">Scenario: Spinning Table (IDAT)</option>
                <option value="station">Scenario: Space Station Gravity</option>
            </select>
        </div>

        <div style="margin-bottom: 15px;">
            <label id="label-mass" style="display: block; font-size: 0.8rem; color: #4a6070; text-transform: uppercase;">Mass (kg) [Object]</label>
            <input type="number" id="mass" value="3.5" step="0.1" style="width: 100%; background: rgba(255,255,255,0.05); border: 1px solid rgba(0, 212, 212, 0.2); color: #fff; padding: 10px; outline: none; box-sizing: border-box;">
        </div>

        <div style="margin-bottom: 15px;">
            <label id="label-radius" style="display: block; font-size: 0.8rem; color: #4a6070; text-transform: uppercase;">Radius (m)</label>
            <input type="number" id="radius" value="1.0" step="0.1" style="width: 100%; background: rgba(255,255,255,0.05); border: 1px solid rgba(0, 212, 212, 0.2); color: #fff; padding: 10px; outline: none; box-sizing: border-box;">
        </div>

        <div style="margin-bottom: 15px;">
            <label style="display: block; font-size: 0.8rem; color: #4a6070; text-transform: uppercase;">Input Speed As:</label>
            <select id="velType" onchange="toggleSpeedInputs()" style="width: 100%; background: #0a0f1e; border: 1px solid rgba(0, 212, 212, 0.2); color: #00d4d4; padding: 10px; box-sizing: border-box;">
                <option value="linear">Linear Velocity (m/s)</option>
                <option value="angular">Rotational Speed (RPM)</option>
            </select>
        </div>

        <div id="linearInput" style="margin-bottom: 15px;">
            <input type="number" id="velocity" value="12.6" step="0.1" style="width: 100%; background: rgba(255,255,255,0.05); border: 1px solid rgba(0, 212, 212, 0.2); color: #fff; padding: 10px; outline: none; box-sizing: border-box;">
        </div>

        <div id="angularInput" style="margin-bottom: 15px; display: none;">
            <input type="number" id="rpm" value="120" step="1" style="width: 100%; background: rgba(255,255,255,0.05); border: 1px solid rgba(0, 212, 212, 0.2); color: #fff; padding: 10px; outline: none; box-sizing: border-box;">
        </div>

        <button onclick="calculate()" style="width: 100%; background: #00d4d4; border: none; color: #05080f; padding: 15px; font-weight: bold; cursor: pointer; text-transform: uppercase; font-family: 'Share Tech Mono', monospace; transition: 0.3s; margin-top: 10px;">Execute Physics Simulation</button>

        <div style="margin-top: 25px; display: grid; grid-template-columns: 1fr 1fr; gap: 15px; border-top: 1px solid rgba(0, 212, 212, 0.2); padding-top: 20px;">
            <div style="text-align: center;">
                <span style="font-size: 0.7rem; color: #4a6070; text-transform: uppercase; display: block;">Force (F)</span>
                <div id="res-force" style="font-size: 1.4rem; color: #fff; font-family: 'Share Tech Mono', monospace;">0 N</div>
            </div>
            <div style="text-align: center;">
                <span style="font-size: 0.7rem; color: #4a6070; text-transform: uppercase; display: block;">G-Force (g)</span>
                <div id="res-g" style="font-size: 1.4rem; color: #ff6b35; font-family: 'Share Tech Mono', monospace;">0.00g</div>
            </div>
        </div>

        <div id="comfort-zone" style="margin-top: 15px; text-align: center; font-size: 0.8rem; font-family: 'Share Tech Mono', monospace; min-height: 20px;"></div>
    </div>

</div>

<script>
function updateLabels() {
    const mode = document.getElementById('calcMode').value;
    const title = document.getElementById('calc-title');
    const lMass = document.getElementById('label-mass');
    
    if(mode === 'station') {
        title.innerText = "Artificial Gravity Simulator";
        lMass.innerText = "Inhabitant Mass (kg) [Human]";
    } else {
        title.innerText = "Centripetal Force Analyzer";
        lMass.innerText = "Mass (kg) [Object/Manikin]";
    }
    calculate();
}

function toggleSpeedInputs() {
    const type = document.getElementById('velType').value;
    document.getElementById('linearInput').style.display = type === 'linear' ? 'block' : 'none';
    document.getElementById('angularInput').style.display = type === 'angular' ? 'block' : 'none';
}

function calculate() {
    const m = parseFloat(document.getElementById('mass').value);
    const r = parseFloat(document.getElementById('radius').value);
    const mode = document.getElementById('calcMode').value;
    const speedType = document.getElementById('velType').value;
    
    let force = 0;
    let rpmValue = 0;

    if (r <= 0) {
        document.getElementById('res-force').innerText = "ERR";
        return;
    }

    if (speedType === 'linear') {
        const v = parseFloat(document.getElementById('velocity').value);
        force = m * (Math.pow(v, 2) / r);
        // Calculate RPM from linear: v = (2 * pi * r * RPM) / 60
        rpmValue = (v * 60) / (2 * Math.PI * r);
    } else {
        rpmValue = parseFloat(document.getElementById('rpm').value);
        const omega = (rpmValue * 2 * Math.PI) / 60;
        force = m * Math.pow(omega, 2) * r;
    }

    const gValue = force / (m * 9.806);
    
    document.getElementById('res-force').innerText = Math.round(force) + " N";
    document.getElementById('res-g').innerText = gValue.toFixed(2) + "g";

    // Comfort logic for Space Station Mode
    const comfortBox = document.getElementById('comfort-zone');
    if(mode === 'station') {
        if(rpmValue > 2) {
            comfortBox.innerHTML = "<span style='color: #ff3e3e;'>[WARNING: HIGH CORIOLIS NAUSEA]</span>";
        } else {
            comfortBox.innerHTML = "<span style='color: #00d4d4;'>[STATION COMFORT: OPTIMAL]</span>";
        }
    } else {
        comfortBox.innerHTML = "";
    }
}

// Initial Run
calculate();
</script>

Encryption: AES-256 Enabled

Below is the calculator in question:

Centripetal Force Analyzer

Analysis Mode

Mass (kg) [Object]

Radius (m)

Input Speed As:

Force (F)

0 N

G-Force (g)

0.00g

Space Station Rpm, G Force and Radius Calculator

Centripetal Force Analyzer

System Archive