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MemoNeet - Physics Official

MemoNeet - Physics Official

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A system of particles is in equilibrium. What is the condition for the net external torque acting on the system?
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In a system of particles, if the net external force acting on the system is zero, what can be said about its linear momentum?
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What is the angular momentum of a system of particles conserved with respect to?
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If a system of particles is isolated and experiences no external torque, what can be concluded about its angular momentum?
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In a system of particles, if the net external torque is applied for a certain time, what is the relationship between the change in angular momentum and the torque applied?
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The linear momentum of a system of particles is conserved if:
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For a system of particles, what is the relationship between the moment of inertia and the radius of gyration?
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If a system of particles experiences an internal force, what can be said about the total linear momentum of the system?
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If the Earth's mass were suddenly doubled while its radius remained the same, how would the gravitational acceleration at the surface change?
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Two masses, (m_1) and (m_2), are separated by a distance (r). If the distance is halved, what happens to the gravitational force between them?
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A satellite is in a circular orbit around Earth. If the mass of Earth were increased while the satellite's orbital radius remained constant, what would happen to the orbital speed of the satellite?
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If an object is taken to a height twice the Earth's radius above the surface, how would its weight change?
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What is the escape velocity for an object on the surface of Earth?
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If the mass of an object is doubled while its radius remains the same, what happens to its gravitational potential energy?
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Two planets have the same radius but different masses. Which planet will have a greater escape velocity?
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If the separation between two masses is tripled, what happens to the gravitational force between them?
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What is the orbital velocity of a satellite in a circular orbit around Earth, given that the radius of the orbit is (7 \times 10^6 m)? (Use (G = 6.67 \times 10^{-11} Nm^2/kg^2))
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If the mass of an object is halved while its radius is doubled, what happens to its gravitational potential energy?
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