var ground;

var slingshotBird, slingshotConstraint;

var angle=0;

var angleSpeed=0;

var canvas;

////////////////////////////////////////////////////////////////

function setupPropeller(){

propeller =Bodies.rectangle(150,480,200,15,{

isStatic: true, angle: 0

});

World.add(engine.world, [propeller]);

}

////////////////////////////////////////////////////////////////

//updates and draws the propeller

function drawPropeller(){

push();

angle === angleSpeed

drawVertices(propeller.vertices);

pop();

}

How do I make it so that this two things happen. How do I make it so the propeller has an angular velocity? the angular velocity equal to the global variable angleSpeed already provided for you. Update the variable angle by angleSpeed.