Question

In hammer throw, before the hammer is let go off, why is it whirled around along a circular path?

Answer 1

Circular motion is defined as the movement of an object around the perimeter of a circle or the rotation of an item along a circular route in physics. It can be either uniform (with a fixed angular rate of rotation and speed) or non-uniform (with a variable rate of rotation). The rotation of a three-dimensional body around a fixed axis requires circular motion of its components. The equations of motion describe how a body's centre of mass moves. The distance between the body and a fixed point on the surface remains constant in circular motion.

Complete answer:
Unless a force acts on them, objects travel in a straight line at a constant pace. Newton's First Law states this. Many objects, notably circles, travel on curved trajectories, therefore a force must be operating on them to pull them out of their straight line courses and cause them to turn corners. The greater the change of direction and therefore the force, the tighter the curve that the item is made to travel in.

To pull the item out of its straight-line course, the centripetal force always operates towards the circle's centre. Even though an item travels around the circle at a constant pace, its direction of motion is always changing, and so its velocity must be changing.Because a change in velocity is an acceleration, the centripetal force must be operating on the object.

If a force operates on an item being whirled around in a circle, such as a stone on the end of a string, an equal and opposite force must act elsewhere. This is the centrifugal force, which operates on the 'pivot' in the circle's centre. Because it has no effect on the item being spun around, it is frequently referred to as a frictional force.

To gain initial momentum in a hammer throw, the hammer is swirled around in a circular pattern before being released. The tangent is also useful for covering long distance.Linear momentum is defined as the product of an object's mass and velocity in Newtonian physics. It's a two-dimensional vector quantity with a magnitude and a direction. The momentum of an item is p = mv if its mass is $m$ and its velocity is $v$.Momentum is measured in kilogram metres per second (kg m/s) in SI units.

Note: Almost all athletic activities include circular motion. The motion of things in circles is a familiar observation of sports fans across the world, whether it is sports car racing or track and field, baseball jogging or ice skating. The motion of these items that we see from the stadium bleachers or watch on the television display is regulated by Newton's laws of motion, just like any other object travelling in a circle.