Torque Torque is the result of applying a force to rotate an object around an axis. It is a measure of the tendency of a force to change the rotational motion of an object. In a previous section, angular acceleration was introduced, but the possible sources of this were not discussed. Applying a force to Read more about Torque[…]
Conservation of Mechanical Energy We can see many situations in which energy is transferred to or from objects and systems, similar to money being transferred between accounts. In each situation, we assume that the energy that was involved can be accounted for, that is, energy cannot appear or disappear. Energy obeys the law of conservation Read more about Conservation of Mechanical Energy[…]
Motion of a car on banked road Friction is not always reliable at circular turns if high speeds and sharp turns are involved. To avoid dependence on friction, the roads are banked at the turn so that the outer part of the road is somewhat lifted up as compared to the inner part.The surface of Read more about Motion of a car on banked road[…]
Position, Path length and Displacement Before we learn about Position, Path length and Displacement, let us know what motion is, Earlier we learnt that motion is change in position of an object with time. Everywhere we see objects moving around. Animals go from one place to another in search of food, shelter. River flow, earth Read more about Position, Path length and Displacement[…]
Simple Harmonic Motion In the preceding sections, the motion of a body when acted upon by a constant force was considered. The motion is one of constant acceleration. In this section, the motion of a body subjected to a variable force is considered. There is one common and important type of non-uniformly accelerated motion that Read more about Simple Harmonic Motion[…]
According to the first law of motion given by Newton says that a body is in its current motion state till any external force is acted upon it. The moment of inertia of the linear motion is measured by the mass of the system and angular counterpart. The inertia is related to mass and the amount of mass distribution Read more about Moment of inertia[…]
Johannes Kepler – The Story: The German astronomer, Johannes Kepler was born in the year 1571. When he was training to become a minister, he came across the work of Nicolaus Copernicus. At that time it was believed that the sun and other planets orbit the earth and not how as we know it now Read more about Kepler’s Laws of Planetary Motion[…]
When we compress or extend a stretched spring, we experience a force equal to that applied by us in the opposite direction. Have you wondered why this happens? When a spring deviates from its mean position, it tends to restore its equilibrium by exerting a force equal and opposite to the external force. But in which way Read more about Potential Energy of the Spring[…]
We know that hot water of milk, when kept at room temperature, cool drown gradually. But have you noticed that the rate at which hot milk cools down to a lukewarm state is lesser as compared to that required by a lukewarm milk to cool and attain the room temperature? Have you ever wondered why Read more about Newton’s Law of Cooling[…]
Have you ever noticed that once you fill a glass up to the brim with water, you can still add a few more drops till it spills out? Or have you ever broken a thermometer and observed how the fallen mercury behave? This is where a property called Surface Tension comes into play. It is Read more about Surface Tension[…]