Share & grow the world's knowledge!
We want to connect the people who have knowledge to the people who need it, to bring together people with different perspectives so they can understand each other better, and to empower everyone to share their knowledge.
Three equal masses, m each are placed at the three corners of an equilateral triangle of side length l. The gravitational field at centre of triangle is
When three equal masses, each of mass m , are placed at the corners of an equilateral triangle with a side length l , the gravitational field at the center of the triangle is zero because of the symmetrical arrangement of the masses. Each mass generates a gravitational field that points toward itselRead more
When three equal masses, each of mass m , are placed at the corners of an equilateral triangle with a side length l , the gravitational field at the center of the triangle is zero because of the symmetrical arrangement of the masses. Each mass generates a gravitational field that points toward itself.
At the centroid, equidistant from every corner of the triangle, the gravitational fields created from each mass can be weighed. Since the masses were equal and symmetrically placed, the magnitudes of the gravitational fields which they created were identical in magnitude. However, their directions were such as to point toward each corresponding mass.
At the centroid, when the vector sums of gravitational fields of three masses are taken, then these cancel out each other completely. This happens as the angles between lines drawn connecting each mass and the centroid are all the same so that vectors pointing out of each pair of masses would add to point in opposite directions.
Thus, the net gravitational field at the center of the triangle becomes zero. This result shows an important concept in physics: symmetry can cause cancellation effects, leading to a balanced state in gravitational interactions.
See lessWhat precautions should be taken while executing a pole turn in kho-kho?
While executing a pole turn in kho-kho, players should maintain balance and plant their inner foot firmly near the pole. Excessive force must be avoided to prevent slips or loss of control. Keeping the eyes focused on the pole ensures better precision during the turn. Controlled movements and properRead more
While executing a pole turn in kho-kho, players should maintain balance and plant their inner foot firmly near the pole. Excessive force must be avoided to prevent slips or loss of control. Keeping the eyes focused on the pole ensures better precision during the turn. Controlled movements and proper posture reduce the risk of injuries and enhance efficiency. Practicing this technique consistently helps players refine their skills and perform pole turns effectively in competitive matches.
See lessShare your experience while playing kho-kho. How did you anticipate the random visual signal for starting a movement?
During kho-kho, random visual signals demanded full attention to anticipate correctly. By focusing on the coach's gestures and maintaining readiness, I could quickly rise and start chasing or evading. Practicing drills with unpredictable cues significantly enhanced my reaction time and agility. ThisRead more
During kho-kho, random visual signals demanded full attention to anticipate correctly. By focusing on the coach’s gestures and maintaining readiness, I could quickly rise and start chasing or evading. Practicing drills with unpredictable cues significantly enhanced my reaction time and agility. This experience underscored the importance of concentration and quick reflexes, as these factors played a critical role in improving gameplay fluidity, ensuring effective transitions during high-pressure situations on the court.
See lessDiscuss what happens each time when elbows are flexed and not flexed while making the pole turn.
When elbows are flexed during pole turns, the body maintains better control and fluidity, enabling smoother rotations and minimizing strain. Flexed elbows allow for a tighter grip on the pole and improved maneuverability. In contrast, unflexed elbows create rigidity, making turns less efficient andRead more
When elbows are flexed during pole turns, the body maintains better control and fluidity, enabling smoother rotations and minimizing strain. Flexed elbows allow for a tighter grip on the pole and improved maneuverability. In contrast, unflexed elbows create rigidity, making turns less efficient and increasing the risk of injuries. Maintaining proper elbow positioning during turns is crucial for effective gameplay, as it enhances agility and ensures safer, quicker transitions while chasing defenders in kho-kho.
See lessPictorially elaborate the strategy for covering and chasing, how to anticipate the opportunity for covering and then attack.
In covering and chasing, observe the defender's movements and anticipate their next steps. Coordinate with teammates to block possible escape routes, forming a strategic barrier. As opportunities arise, adjust your position to attack swiftly. Quick reactions and smooth transitions between covering aRead more
In covering and chasing, observe the defender’s movements and anticipate their next steps. Coordinate with teammates to block possible escape routes, forming a strategic barrier. As opportunities arise, adjust your position to attack swiftly. Quick reactions and smooth transitions between covering and chasing are essential to this strategy. Practicing team coordination and agility drills helps refine the ability to predict movements and execute effective tags during high-pressure moments in kho-kho matches.
See less