Mechanical equilibrium has a very careful meaning in physics. Is our moon in mechanical equilibrium? No O Yes

Q: What was the PE when the mass of an object was 5kg and is 2 meters of the ground (height)? (Remember…

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Q: How much gravitational potential energy exists between the planet and moon?

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Q: If a person has a mass of 55 kg at sea level, their mass in orbit would be:

A: Mass is the amount of matter contained in a body. It is a fixed quantity under non-relativistic…

Q: What is Centripetal force? What is it's mathematical expression?

A: Centripetal force, is that part or component of the force, which acts on an object, when an object…

Q: snowflake (1.5 x 10) falls to Earth's surface under gravity (9.8 ). What is the force of the snowfla…

A: SOlution: given that m = 1.5x10-9 kg g = 9.8 m/s2

Q: A friend says that, since Earth’s gravity is so much stronger than the Moon’s gravity, rocks on the…

A: The correct statement is that "earth's gravity on earth's surface" is much stronger than "moon's…

Q: If the Moon pulls Earth as strongly as Earth pulls the Moon , why doesn't Earth rotate around the…

A: The mass of the Moon is smaller than that of the Earth, and they rotate about a central point…

Q: What keeps the Earth in orbit?

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Q: What happen if earth don't have gravity?

A: There's a very famous quote on the imagination if earth don't have gravity, i.e. "Earth itself would…

Q: Force of gravity ?

A: Given data: mass,m= 13.2 kgg= 10 m/s2Determine, a.  Force of gravity ? b.    Weight of block ?

Q: Why satellites are in motion in earth orbit?

A: Launching satellite in to earth orbit is very similar to a projectile motion.In projectile motion if…

Q: Why is the centrifugal force talked about so much if it's not real?

A: Centrifugal force is a fictitious outward force that arises in a rotating frame of reference. It is…

Q: If there is no gravity on earth then what happens?

A: The gravity is the reason, the earth is holding up together. Without the force of gravity to hold it…

Q: Which requires less fuel: launching a rocket to escape from the Moon or from Earth? Defend your…

A: Force of gravity defines the attractive force between any two objects. Here, the force of gravity…

Q: If 7 kg mass above is going up an incline of 300, How much mass must be placed to start the 7 kg up…

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Q: If you were on an alien planet, where multiple sources of gravity were affecting you, would the…

A: The gravity simply means pulling all things toward ground. human body develop itself according to…

Q: Which requires less fuel, launching a rocket to escape speed from the Moon or from Earth? Defend…

A: Force of gravity defines the attractive force between any two objects. Here, the force of gravity…

Q: what is the gravitational constant in english unit?

A: Newton's law of gravitation says that gravitational force acting between two bodies is directly…

Q: Calculate the force of gravity between a newborn baby (mass=3Kg) and the planet Mars(…

A: Consider the mass of the newborn baby be m, the mass of the planet Mars be MM, and the distance of…

Q: why do we launch at a higher altitude to reduce the kinetic energy required to reach orbit?

A: The kinetic energy required to launch an object into space is proportional to the resistance offered…

Q: What if there is no gravity on earth?

A: It is important to understand that the earth’s mass causes the gravity. If the mass of the earth is…

Q: Calculate the force of gravity on the same 1-kg mass if it were 6.4 × 10 6 m above Earth’s surface…

A: Given Mass of the object m1 = 1 kg Height h = 6.4 x 106 m

Q: With respect to spring and neap ocean tides, when are the tides lowest? That is, when is it best for…

A: The rise or fall of the waves occurs due to the gravitational pull of Moon either in new or full…

Q: Must engineers take Earth’s rotation into account when constructing very tall buildings at any…

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Q: The first asteroid to be discovered is Ceres. It is the largest and most massive asteroid is our…

A: Given data:  Mass (m) = 3.0 × 1021 kg Speed (v) = 17900 m/s Required: Kinetic energy

Q: orce of gravity that would act on an

A: Given  Mass of astronaut, m=103 kg

Q: The value of "g" at the surface of Mars is 3.7 N/kg. How much would a 60.0-kg person weigh at an…

A: Acceleration due to gravity on Mars , g = 3.7 N/kg mass , m = 60 kg To find = Weight of the person…

Q: A spring obeying Hooke's law has a spring constant of 2.7 N/m. If you load it with 2.2 kg  (about 1…

A: Given data:  Spring constant (k) = 2.7 N/m Mass (m) = 2.2 kg Acceleration due to gravity (g) = 9.8…

Q: Titan completes one orbit about Saturn in 15.9 days and the average Saturn-Titan distance is 1.22 x…

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Q: The first asteroid to be discovered is Ceres. It is the largest and most massive asteroid is our…

A: Given:  mass, m = 3 x 1021 kg velocity, v = 17900 m/s

Q: A planet and moon pictured above have identical densities. Identify the magnitude of the value that…

A: Given data:  Densities of a planet and moon is same. There is only gravitational force between them

Q: Calculate the force of gravity between a newborn baby (mass = 3 kg) and the planet Mars (mass = 6.4…

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Q: What would happen to an orbiting planet if the gravitational forces cease to act on it?

A: If the gravitational forces cease to act on orbiting planet then they will not go under circular…

Q: Why do Moon travellers tie heavy weight on their backs before landing on the Moon?

A: Acceleration due to gravity of the moon is one-sixth of the acceleration due to the gravity of the…

Q: Why our mass reduces on moon?

A: Weight is not absolute quantity. It varies with the place and altitude.

Q: what recreational activities rely on gravity?

A: Gravity :               Gravity is the force that pulls objects towards the Earth. It’s the reason…

Q: As a meteor moves fromn a distance of 16 Earth radii to a distance of 2 Earth radii from the center…

A: solution is given by

Q: Calculate the weight of a 6.6-lbm wood on a planet where the acceleration due to gravity is 10 m/s??

A: Given data The mass of the wood in lbm is given as m = 6.6 lbm. The gravitational acceleration of…

Q: Question 1 m = 1.7 kg, a = 2.5 m What is the Force? Round your answer to the tenths place.

A: Given that the value of mass(m) and acceleration (a). Then We have to determine the value of…

Q: if you drop a feather on and a steel hammer at the same moment, they should hit the ground at the…

A: The second equation of motion is  where, s is the distance, u is the initial velocity, t is the…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.