(II) A hypothetical planet has a mass 2.80 times that of Earth, but has the same radius. What is g near its surface?

Q: (II) Two objects attract each other gravitationally with a force of 2.5x10-10  N when they are 0.25…

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Q: The radius of the Earth is about 6,000 km.  My weight on the surface of the Earth is 950 N. At…

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Q: If distance between the object is doubled, then the gravitational force of attraction becomes

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Q: Two satellites A and B have masses m and 2m respectively. A is in a circular orbit of radius R and B…

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Q: When will you attract the sun more: today at noon, or tonight at midnight? Explain.

A: Force of attraction on Sun

Q: The Sun rotates about the center of the Milky Way Galaxy (Fig. 6-29) at a distance of about 30,000…

A: Distance of Sun from the center of the Milkyway galaxy, d = 30,000 ly = 30,000×9.5×1015 m = 285×1018…

Q: A distant large asteroid is detected that might pose a threat to Earth. If it were to continue…

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Q: in the gravitational PE formula is it negative since the given mass is attracted to gravity

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Q: Two objects attract each other with a gravitational force ofmagnitude 1.00 x 10-8 N when separated…

A: The magnitude of gravitational force of two objects,

Q: at what height above the Earth's surface would your weight be 12% yor weight on the surface? use…

A: The gravitational acceleration at height h above the Earth's surface  is given by, g'= g(1+hR)2

Q: When a communications satellite is placed in a geosynchronousorbit above the equator, it remains…

A: The idea behind an artificial satellite in a geosynchronous orbit around the Earth is that the time…

Q: The centers of two 25.0 kg spheres are separated by 5.00 m. The magnitude of the gravitational force…

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Q: What must the separation be between a 4.7 kg particle and a 6.6 kg particle for their gravitational…

A: Write the expression for gravitational force of attraction.

Q: (II) Four 8.5-kg spheres are located at the corners of a square of side 0.70 m. Calculate the…

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Q: straight ahead, and find yourself returning to your spacecraft from the opposite side after…

A: Given:-  your spacecraft from the opposite side after completing a lap of  S = 25.1 km  You hold a…

Q: 38. Go A satellite has a mass of 5850 kg and is in a circular orbit .1 × 10° m above the surface of…

A: The weight of a satellite when it is at rest on the planet's surface is given by the equation:…

Q: 3/224 Just after launch from the earth, the space-shuttle orbiter is in the 37 × 137-mi orbit shown.…

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Q: Would the force from the earth increase or decrease if the mass was kept constant but the radius of…

A: we know gravitational force of earth is 9.8 m/s2  g=GMR2= 9.8 m/s2     here , G= 6.67 *10-11 N m2…

Q: Ignoring air resistance, could a satellite be put into orbit in a circular tunnel beneath Earth's…

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Q: At what height (in km) above the surface of Earth would the gravitational ?acceleration be 6.6 m/s-

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Q: At a particular point in orbit a satellite in an elliptical orbit has a gravitational PE of 6000 MJ…

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Q: if the moon's distance were increased from the earth, would the gravitational force increase or…

A: Let the mass of moon = m Let the mass of earth = M Let the initial distance between earth and moon =…

Q: (II) Four 7.5-kg spheres are located at the corners of asquare of side 0.80 m. Calculate the…

A: The gravitational force is always attractive. The three other spheres on the corners of the square…

Q: With how much velocity should a body be projected vertically upwards from the surface of the earth…

A: Let, the initial velocity of the body be denoted by 'u' and the velocity after reaching a height(h)…

Q: 13-118. The satellite is moving in an elliptical orbit with an eccentricity e = 0.25. Determine its…

A: Scenario-A satellite is orbiting earth in elliptical orbit. A and B are its farthest and nearest…

Q: Where is the weight of body more , at the surface of the Earth or in a mine?

A: Value of acceleration due to gravity decreases as the depth of the object inside the earth…

Q: Show that the angular momentum per unit mass h of a satellite describing an elliptic orbit of…

A: The general equation for radius of semi major axis of ellipse is a=rA+rB22a=rA+rB The trajectory…

Q: 15. If a planet's mass is tripled and its radius is doubled, the acceleration due gravity on the…

A: For the planet: The mass is M The radius is R The expression for the acceleration due to gravity…

Q: "o spherical objects have masses of 2.90 x 10 kg and 7.3 x 10° kg. The gravitational attraction…

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Q: Two balls have their centers 2.0 m apart. One has a mass of 8.0 kg. The other has a mass of 6.0 kg.…

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Q: Estimate the gravitational force acting on you?

A: When two bodies have mass ,then they attract each other by gravitational force which is directly…

Q: 15. If a planet's mass is tripled and its radius is doubled, the acceleration due to gravity on the…

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Q: The radius of earth is Re. If the acceleration due-o.gravity reduces to 25% of its value at the…

A: Acceleration due to gravity is given by g=GM(Re)2 And variation of g with the altitude is given by…

Q: If the radius of earth were to shrink by one percent, its mass remaining the same, the acceleration…

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Q: • You are an astronaut observing a small planet to be spherical. • After landing on the planet, you…

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Q: (I) Calculate the force of Earth’s gravity on a spacecraft 2.00 Earth radii above the Earth’s…

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Q: (II) If you doubled the mass and tripled the radius of a planet, by what factor would g at its…

A: Given data The new mass of the planet is m2=2m here m is the original mass of the planet. The new…

Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.