Linear motion12/3/2023 ![]() ![]() Second equation of motion, s = ut + 1/2 at²Īccording to Newton’s second law of motion, the force responsible for producing linear motion is given as F=mass x acceleration. The equations for motion to study displacement, velocity, and acceleration are given as: The inertia in linear motion is contributed by the mass and velocity of the object. The formula for the acceleration can be written as The acceleration of an object in motion is the rate of change in velocity. The rate of change of displacement is known as linear velocity, given by v = dx/dt and its SI unit is m/s If the starting and ending point of the motion is along the same straight path, the magnitude of distance is equal to that of distance. The distance travelled by an object is always measured as a straight line. The motion of an object along a straight line is known as linear motion.įor example, the motion of children cycling, cars running on the road, etc. Difference between Linear Motion and Rotational Motion Linear motion To calculate the speed of any object, we use the formula The motion is always depicted using vectors and graphs represented by the x and time component graph if we were to plot a uniform linear motion graph, the plot would show a straight line across the graph as there will be no change in direction or speed. The main difference between linear motion and non-uniform linear motion is that one is scalar, and the other is a vector quantity alongside small differences like constant velocity, zero acceleration, etc. In non-uniform linear motion, we must also consider direction as a factor. The law states that when an object is in motion with no external forces acting on it with constant velocity, then the object will continue to stay in motion, but, in reality, motion on earth has many forces like friction and gravity are acting on the object in motion hence making it a non-uniform motion if we were to roll a ball in space that has no friction or gravity then said Newton’s law of motion is accurate also giving us uniform linear motion. One example of linear motion is Newton’s first law of motion. It is very unlikely that uniform linear motion exists in day to day life. This rotational motion causes a body to move around a given axis called the axis of rotation. When force is applied on one end of a body, and the force is such that the body has angular displacement, we call it rotational motion. Rotational motion is due to the effect of the moment of force. ![]() A rotation about a totally external axis is called revolving or orbiting, usually when it is under the influence of gravitational force, then ends of the axis of rotation can be stated as orbital poles. When the rotation axis goes via the centre of the body’s mass, the body can be stated to be auto-rotating or spinning, and the surface cross-section of the axis is called a pole. Any 3d body object may have an indefinite number of rotation axes. Rotation is the movement in a circle of a body about an axis of rotation. Let us look further in detail at the different types of motion. While linear motion deals with the movement of bodies in a given plane, rotational motion deals with the movement of bodies around a given axis. The distinction between these types of motion is the type of displacement that occurs. However, motion can be classified into two major types, linear and rotational motion. From humans walking to the earth’s rotation, there are thousands of everyday examples of motion. Motion is the first phenomenon that humankind observed. ![]()
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