PhysicsCalculator/harmonic.html at main · EmilyButera/PhysicsCalculator · GitHub

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Harmonic Motion Calculator</title>
        <link rel="stylesheet" href="style.css">
    </head>
    <body>
        <h1>Simple Harmonic Motion Calculator</h1>
        <label for="equationType">Choose what to calculate:</label>
        <select id="equationType" onchange="updateInputs()">
            <option value="force">Restoring Force (F = -kx)</option>
            <option value="omega">Angular Frequency (ω = sqrt(k/m))</option>
            <option value="period">Period (T = 2π√(m/k))</option>
        </select>
        <br><br>
        <div id="forceInputs">
            <h3>Mass (m):</h3>
            <input type="number" id="massF" placeholder="Mass (kg)">
            <br>
            <h3>Spring constant (k):</h3>
            <input type="number" id="springF" placeholder="Spring constant (N/m)">
            <br>
            <h3>Displacement (x):</h3>
            <input type="number" id="displacementF" placeholder="Displacement (m)">
            <br>
        </div>
        <div id="omegaInputs" style="display:none;">
            <h3>Mass (m):</h3>
            <input type="number" id="massO" placeholder="Mass (kg)">
            <br>
            <h3>Spring constant (k):</h3>
            <input type="number" id="springO" placeholder="Spring constant (N/m)">
            <br>
        </div>
        <div id="periodInputs" style="display:none;">
            <h3>Mass (m):</h3>
            <input type="number" id="massP" placeholder="Mass (kg)">
            <br>
            <h3>Spring constant (k):</h3>
            <input type="number" id="springP" placeholder="Spring constant (N/m)">
            <br>
        </div>
        <br>
        <button id="calculate" onclick="calculate()">Calculate</button>
        <div id="result"></div>
        <br>
        <p>Note: This calculator assumes a simple harmonic oscillator (like a mass on a spring). Select which value to calculate.</p>
        <br>
        <script>
            function updateInputs() {
                const type = document.getElementById('equationType').value;
                document.getElementById('forceInputs').style.display = type === 'force' ? '' : 'none';
                document.getElementById('omegaInputs').style.display = type === 'omega' ? '' : 'none';
                document.getElementById('periodInputs').style.display = type === 'period' ? '' : 'none';
            }
            function calculate() {
                const type = document.getElementById('equationType').value;
                let result = '';
                if (type === 'force') {
                    const m = parseFloat(document.getElementById('massF').value);
                    const k = parseFloat(document.getElementById('springF').value);
                    const x = parseFloat(document.getElementById('displacementF').value);
                    if (isNaN(m) || isNaN(k) || isNaN(x) || m <= 0 || k <= 0) {
                        document.getElementById('result').innerText = 'Please enter valid positive numbers for mass, spring constant, and displacement.';
                        return;
                    }
                    const F = -k * x;
                    result = `<p>Restoring Force (F): ${F.toFixed(2)} N</p>`;
                } else if (type === 'omega') {
                    const m = parseFloat(document.getElementById('massO').value);
                    const k = parseFloat(document.getElementById('springO').value);
                    if (isNaN(m) || isNaN(k) || m <= 0 || k <= 0) {
                        document.getElementById('result').innerText = 'Please enter valid positive numbers for mass and spring constant.';
                        return;
                    }
                    const omega = Math.sqrt(k / m);
                    result = `<p>Angular Frequency (ω): ${omega.toFixed(2)} rad/s</p>`;
                } else if (type === 'period') {
                    const m = parseFloat(document.getElementById('massP').value);
                    const k = parseFloat(document.getElementById('springP').value);
                    if (isNaN(m) || isNaN(k) || m <= 0 || k <= 0) {
                        document.getElementById('result').innerText = 'Please enter valid positive numbers for mass and spring constant.';
                        return;
                    }
                    const T = 2 * Math.PI * Math.sqrt(m / k);
                    result = `<p>Period (T): ${T.toFixed(2)} s</p>`;
                }
                document.getElementById('result').innerHTML = result;
            }
            window.onload = updateInputs;
        </script>
    </body>
</html>

</html>