0
How is an object's mass related to the upward force needed to overcome the pull of gravity?
Wiki User
∙ 12y ago
The upward force would have to overcome gravity, so the force should be F > -mg. Since the upward force and gravity work in opposite direction you can disregard the mass of the object (they cancel: F(gravity) = F(upward) => mg = -m(g+x)) . Consequently the object's mass is irrelevant.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is related to how much force is needed to change an objects motion?
i think its momentum but I'm not sure.....
All objects change velocity as they move toward earth do to which factor of gravity?
i needed this question but chilish people and this jank cite wont give it to me
The forces needed to overcome static is usually less than that needed to overcome kinetic friction?
True -It's "False"!
The force needed to overcome kinetic friction is usually less than that needed to overcome static friction true or false?
false
The force needed to overcome kinetic frictions is usually less than that needed to overcome static friction?
True -It's "False"!
How is an objects mass related to the upward force needed to overcome the pull of gravity?
Times the objects weight (In kilograms) by (approximately) 9.81 to get the objects mass on Earth. This figure, is the amount of Newtons (N) needed to overcome the pull of gravity. Example. A cat weighs 10Kg. 10X9.81 = 98.1N It would take 98.1N to lift this cat off the ground.
What is related to how much force is needed to change an objects motion?
i think its momentum but I'm not sure.....
All objects change velocity as they move toward earth do to which factor of gravity?
i needed this question but chilish people and this jank cite wont give it to me
The forces needed to overcome static is usually less than that needed to overcome kinetic friction?
True -It's "False"!
How old was isaac newton when he came up with the name 'gravity'?
He didn't. The word gravity was in use in the English language by about 200 years before Newton developed his theory of gravity. People already knew that gravity made objects fall, Newton just gave a highly accurate insight into how gravity works. Newton was 44 years old when he published is Principia in which He laid out his theory. These are his main contributions:described gravity as an attractive force between all objects with mass that is directly proportional to the objects and inversely proportional to the square of their distances.He proposed that gravity not only made objects fall on Earth but was the attractive force that kept the various celestial objects in their orbits.Newton's formulation of gravity is so accurate that it is even used to plot the trajectories of spacecraft. It is only in instances of extreme speed or density or when extreme precision is needed that scientists must use general relativity to describe gravity.
The force needed to overcome kinetic friction is usually less than that needed to overcome static friction true or false?
false
Is The force needed to overcome static friction usually less than that needed to overcome kinetic friction.?
True -It's "False"!
The force needed to overcome kinetic frictions is usually less than that needed to overcome static friction?
True -It's "False"!
True or false the force needed to overcome kenetiic friction is useally greater than that needed to overcome static friction?
false; usually it takes more force to overcome static friction which is higher
What are some of the problems that needed to be overcome in order for NASA to be able to land men on the moon and return them safely?
The primary concern of any moon landing is the high velocity involved that arises from the effects of gravity. In order to go to any moon, a spacecraft must first leave the gravity well of the Earth.
What may happen to a rocket which rises from the earth never attains escape velocity?
A rocket that doesn't reach "escape velocity" will be overcome by gravity and will be pulled back down to Earth. Also, rockets which go into orbit have not reached escape velocity. Escape velocity is what is needed to completely leave earth's gravity well.
How does the space station overcome gravity?
Answer #1 .Rockets were used to put the space station (and its various component parts) into orbit,thereby overcoming gravity. Once in orbit, gravity continues to be overcome by theangular momentum of the orbiting station. Sometimes it is necessary to use rocketsagain, to add a bit more momentum, since there is still some friction even at that altitude.==================Answer #2 .The parts of the space station certainly needed powerful rocket boosters to raise themabove the atmosphere, and accelerate them to a high enough tangential ('sideways')speed to maintain orbit. But once that job is done, it doesn't take any more work tostay in orbit. I mean, look at the Moon !And actually, for that matter, you would not want the space station to overcome gravity,because gravity is what keeps things in orbits.
