title: Prevent body from rotating in Box2D
body: <p>I am currently using Box2d, more precisely the Java port jBox2d.</p>
  
  <p>I have a circle that is colliding with other circles when falling (all those circles form a kind of a crank, see picture below).</p>
  
  <p><img src="https://i.stack.imgur.com/Dg7Ah.png" alt="illustration"></p>
  
  <p>Naturely, the circle begins to rotate when falling. But I would like to <strong>prevent it from rotating</strong> so that the friction is much higher.</p>