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A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere. You may takr G = 6.67 x 10⁻¹¹ Nm² kg⁻²
To calculate the work required to move a particle away from a sphere, we consider the gravitational potential energy between the two. The particle has a mass of 10 g (0.01 kg), and the sphere has a mass of 100 kg with a radius of 10 cm (0.1 m). The work done is equivalent to the energy needed to oveRead more
To calculate the work required to move a particle away from a sphere, we consider the gravitational potential energy between the two. The particle has a mass of 10 g (0.01 kg), and the sphere has a mass of 100 kg with a radius of 10 cm (0.1 m). The work done is equivalent to the energy needed to overcome the gravitational attraction and take the particle far away, where gravitational potential energy becomes zero.
Gravitational potential energy is determined by the masses involved, the gravitational constant G = 6.67 x 10⁻¹¹ Nm² kg⁻², and the distance between the centers of mass. At the sphere’s surface, this distance is equal to the sphere’s radius (0.1 m).
Substituting the given values into the formula for gravitational potential energy, the calculation shows that the work required to take the particle far away is 6.67 x 10⁻¹⁰ J. This value represents the energy needed to overcome the gravitational pull between the sphere and the particle.
Hence, the work to be done is 6.67 x 10⁻¹⁰ J, reflecting the small but measurable gravitational interaction between the particle and the sphere due to their masses and proximity.
See lessWhat should be done after successfully tagging a defender?
In Kho-Kho, chasers must stay alert after tagging a defender. They immediately chase the next defender without stopping, ensuring a continuous game flow. This quick transition increases the possibility of tagging multiple defenders in a single round. Delays after a tag can reduce team performance, sRead more
In Kho-Kho, chasers must stay alert after tagging a defender. They immediately chase the next defender without stopping, ensuring a continuous game flow. This quick transition increases the possibility of tagging multiple defenders in a single round. Delays after a tag can reduce team performance, so constant focus and agility are essential for effective chasing.
See lessAnswer: (C) Continue chasing the next defender
What is the main purpose of the Covering Chase in Kho-Kho?
The covering chase in Kho-Kho ensures that chasers block defenders’ escape paths by coordinating movements and anticipating runs. Chasers move in a straight line, adjusting their direction quickly to corner defenders. This technique prevents defenders from easily moving across the field, increasingRead more
The covering chase in Kho-Kho ensures that chasers block defenders’ escape paths by coordinating movements and anticipating runs. Chasers move in a straight line, adjusting their direction quickly to corner defenders. This technique prevents defenders from easily moving across the field, increasing the chances of tagging them. Effective covering requires teamwork, quick reactions, and precise movement strategies.
See lessAnswer: (A) To block defenders from escaping
What is the main purpose of Pole Dive in Kho-Kho?
A pole dive in Kho-Kho is a skillful move where chasers dive toward defenders near poles. The chaser maintains low body posture, grips the pole, and uses their free hand to extend reach while tagging the defender. This move requires balance, agility, and precision, helping chasers cover more groundRead more
A pole dive in Kho-Kho is a skillful move where chasers dive toward defenders near poles. The chaser maintains low body posture, grips the pole, and uses their free hand to extend reach while tagging the defender. This move requires balance, agility, and precision, helping chasers cover more ground and increase their chances of successful tagging.
See lessAnswer: (D) To tag defenders quickly
What should defenders avoid while dodging?
In Kho-Kho, defenders should never run in straight lines, as this makes it easier for chasers to anticipate and tag them. They must adopt an unpredictable running pattern by making sudden turns, leaning, and dodging. This strategy confuses chasers, helping defenders stay on the field longer and incrRead more
In Kho-Kho, defenders should never run in straight lines, as this makes it easier for chasers to anticipate and tag them. They must adopt an unpredictable running pattern by making sudden turns, leaning, and dodging. This strategy confuses chasers, helping defenders stay on the field longer and increasing their team’s chances of winning.
See lessAnswer: (D) Running in straight lines