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Free Download of Courebook for Waec (Wassce) and Jamb (Utme) Physics on Circular Motion and SHM

Circular Motion and Simple Harmonic Motion Coursebook image










Free Download of Courebook for Waec (Wassce) and Jamb (Utme) Physics  on Circular Motion and SHM

So I was checking through my archive then I came across this material I made a long time ago. It is on Uniform Circular Motion and Simple Harmonic Motion on Physics for WASSCE and UTME. You can Download it for free to study, I bet you, it is an awesome material.

Like always, a brief expository on the topic of Uniform Motion but not on SHM as I had done that in my previous article-you can check that out too. Also I had already solved past questions on this topic on my YouTube Channel- check it out and don’t forget to subscribe! 


Uniform Circular Motion

If a heavy stone is attached to a long string and whirled steadily round in a horizontal circle by holding the other end of the string, we can feel that a force is needed to make the stone move in its circular path. If the stone is whirled faster the force increases. A far greater force can be seen exerted by the muscles of a hammer-thrower as he whirls the heavy hammer round at a fast speed in a circle.

The Figure below shows an object moving at constant speed round a circle centre O.The velocity v (a vector) at points such as A, B, C is directed along the tangent to the circle at the point concerned. Now the direction of the tangent changes as the object moves from A to B, or from B to C. So the velocity changes. Thus the object has an acceleration although its speed is constant.

An object moving in a circle requires a force directed towards the centre to keep it from moving along the tangent path. This is called the centripetal force on the object. A force produces an acceleration. So the acceleration of the object must be directed towards the centre, as shown.

Forces on an object moving in a circle image

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