0
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 else can I help you with?
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.
Forces are needed to set objects in?
motion.
Why is it valuable for some objects to be shown by more than one kind of model?
Because some objects would be needed to be shown more than once, so you would have to use more than one kind of model.
Why is a greater amount of force needed to accelerate a truck than a jeepney even if they are running with the same velocity?
The truck has a greater mass and therefore a greater amount of inertia to overcome. To accelerate a greater mass requires a greater force.
How does weight effect the momentum of a moving object?
Strictly speaking weight is the force of gravity acting on an object. It should not be confused with the objects mass. Weight ⇔ force When something is on the moon it weights less but its mass is the same. Something special about gravity is that in the absence of air friction, all objects accelerate down at the same rate irrespective of their weight because as a objects weight increases, so does its mass. Take the equation.. F = ma or (weight of an object) = (its mass) x (its acceleration) When an objects weight doubles so does it mass, so the acceleration does not change.
How is inclined plane related to pulley?
An inclined plane and a pulley are both simple machines used to reduce the amount of force needed to move objects. Inclined planes decrease the effort needed to lift objects vertically by allowing them to be moved along a sloped surface. Pulleys reduce the force required to lift objects by distributing the load between multiple ropes. Both inclined planes and pulleys make it easier to overcome gravity when lifting objects.
Does gravity affects the amount of lift on an airplanes lift?
Yes, gravity plays a significant role in the amount of lift generated by an airplane. Lift is the force that counters the weight of the aircraft due to gravity. The amount of lift needed to overcome gravity is directly related to the weight of the airplane.
Why do you have to use force to lift objects?
To lift objects, you have to overcome the force of gravity acting on them. By applying an upward force greater than the force of gravity, you are able to lift the object against gravity's pull. This force is necessary to provide the object with the acceleration needed to move it upwards.
How is an object's mass related to the upward force needed to overcome the pull of gravity?
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.
True or false the force needed to overcome kenetiic friction is useally greater than that needed to overcome static friction?
False. The force required to overcome static friction is generally higher than the force needed to overcome kinetic friction. Static friction is the resistance to the initial movement of two objects at rest, while kinetic friction is the resistance to the motion of objects sliding against each other.
What kind of force is needed to launch rocket ships?
Rocket ships are launched by a combination of forces, including the thrust generated by the rocket engines and the force needed to overcome gravity. The thrust from the rocket engines propels the rocket forward, while the force needed to overcome gravity allows the rocket to lift off the ground and enter into space.
what type of simple machine is slides?
a slide is an inclined plane
Is a magnetic field needed to create gravity?
No, a magnetic field is not needed to create gravity. Gravity is a fundamental force of nature that exists between all objects with mass, whereas magnetism is a different fundamental force that arises from the motion of electric charges.
Why do larger objects require a greater force to accelerate the larger objects?
Larger objects have greater mass, which means they have more inertia. Inertia is the tendency of an object to resist changes in its motion, so more force is needed to overcome this resistance and accelerate larger objects.
Why is a force needed on a plane?
A force is needed on a plane to counteract the forces of gravity and drag, allowing the plane to lift off the ground and maintain altitude. The force generated by the engines helps propel the airplane forward and create lift, enabling it to overcome gravity and stay in the air.
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 static friction is usually greater than the force needed to overcome kinetic friction.
How are gravity and friction related?
They're not. Gravity is a conservative force and friction is a non-conservative force. This means that the amount of energy expended while in motion opposing these forces varies. When moving in a gravitational field, energy is needed only to move upwards, opposing gravity. No energy is needed to move perpendicular through the field. Think of when a football is thrown through the air. The ball leaves the quarterback's arm and arrives at the receiver traveling almost at the exact same speed (neglecting wind). In contrast, consider moving a heavy book across the top of a table. The longer the path taken to move the book, the more energy is expended. I guess a small connection may be that without gravity, there would be no force pushing things down, which would remove friction in some cases. But friction is involved in almost every physical system, such as things when rotate.
