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Since the bed is uniform we can assume that each leg carries exactly 1/4 the total force. Force is equal to mass times the acceleration of the object. The bed, hopefully being at rest, is only effected by gravity. So its acceleration is 9.8 m/s2 downward.
F = 45Kg * 9.8 m/s2
This will give you an answer in Newtons (Kg*m/s2) then divide by 4.
What else can I help you with?
To stop a table in your classroom falling through the floor what must the floor do against the force of gravity pulling the table down?
Newton's third law of motion states that: "For applied force (A), exists some force (B) of equal magnitude acting in the opposite direction of the force applied.". The force of the weight (which is the mass of the table multiplied by gravity) [W=mg] pushing down on the floor is counterbalanced by an equal and opposite force of the floor pushing up on the table. This is why the table does not fall through the floor. The floor is able to provide this force without allowing the table to move through it because the bonds between its atoms are strong enough.
How does your weight mass and the normal force exerted by the floor change when you are in an elevator that starts from rest and accelerates upward?
When you are in an elevator that starts from rest and accelerates upward, your weight (mass times gravitational acceleration) remains constant because your mass does not change. However, the normal force exerted by the floor increases during the upward acceleration. This is because the elevator's acceleration adds to the gravitational force, resulting in a greater normal force acting on you, which can be felt as an increase in apparent weight.
What does isaac newtons fma stand for?
Isaac Newton's F=ma stands for his second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. This law is fundamental in understanding how objects move under the influence of external forces.
A carpenter compares the masses of two types of wood. A cubic meter of ash is 540 kg. A cubic meter of willow is 420 kg. What is the ratio of the willow's mass to the ash's mass?
The Answer is 45Kg
What force is needed to slide a wooden block having a mass of 300 slugs moving across a floor if the friction is 0.80?
The force needed to slide the wooden block can be calculated using the formula: force = friction coefficient * mass * gravity. Given that the mass is 300 slugs and the friction coefficient is 0.80, the force required will be 2400 lbs.
What is the force of gravity of a boy who stands on the floor with a mass of 45 kg?
Answer: Given data: 1) mass=45kg 2) g=9.8 m/s^2 Formula: force=mass*accelaration f=m*a here , f=m*g To find force: f=45*9.8 f=441N The answer is F=441N
What is the upward force of the floor against the boy's feet of a boy who is standing on a floor with a mass of 45kg?
Answer: Given data: 1) mass=45kg 2) g=9.8 m/s^2 Formula: force=mass*accelaration f=m*a here , f=m*g To find force: f=45*9.8 F=441N The force acting on the boy by the gravitational force is 441N or force of boy on the floor. The upward force has same magnitude and different direction as the force by boy(Newton 3rd law of motion) Therefore, The upward force acting in the boy's feet= -441N
What would happen if the force of the floor was greater than the force of gravity on a boy who stands on the floor with a mass of 45kg?
This is not a mysterious or frightening situation at all. It's exactly what happens when the boy stands in an elevator car and pushes the "UP" button. The floor of the car begins to exert a force on the bottom of his feet that is greater than his weight. Since there is then a net upward force on his body, it begins to accelerate upward. When his body reaches the speed of the rising car, the force on his feet again becomes equal to his weight, the net force on him returns to zero, and his acceleration stops ... he's now moving upward at a constant speed. This whole Physics exercise happens millions of times every day, in elevators (lifts) all around the world.
Does a body at rest have an accelaration?
No, becasue force times mass = acceleration. Therefore, if your mass is (for exmaple) 45kg, and you're at rest, your force would be 0, therefore your acceleration would be 45 x 0 = 0 =)
What is the impulse on a 45kg child pushed with a force of 1000N for 0.6s?
Impulse is force x time or 1000 x .6 = 600 N-s
What are the forces that act upon a 1000N person who stands on a floor?
-- a force of 1,000N acting at his center of mass, behind his belt-buckle, and directed downward; -- a reaction force of 1,000N spread around on the soles of his shoes, exerted by the floor and directed upward;
How much force does a floor exert on you?
The force a floor exerts on you is equal and opposite to your weight. This force is known as the normal force, which supports your weight and prevents you from falling through the floor. The magnitude of this force depends on your mass and the acceleration due to gravity.
What is the acceleration a rocket that is 45kg with a thrusting force of 150N but friction is 25N?
Net force is 150N - 25N, or 125N. By Newton's Second Law of motion, acceleration is force divided by mass, so acceleration is 125N divided by 45kg, or 2.78 m s-2.Note: This is a "trite" example, because friction is dependent on velocity, but the question provided a fixed friction. Also, mass varies with time as fuel is consumed, but again the question did not provide those details.
What is the gravity force on a student with a mass of 45kg?
As always, that's going to depend on where he is. Wherever it is, the forces of gravity between him and another nearby mass will both be (45 kg) x (acceleration of gravity in the vicinity of the other mass). If the other mass is the Earth, then the acceleration of gravity is 9.8 m/s2 , and the force, which the student will call his 'weight', is (45) (9.8) = 441 newtons (99.21pounds / 7stone 1.21pounds)
Formula for finding force of an object?
The formula for finding the force of an object is force = mass x acceleration, where force is measured in Newtons (N), mass is measured in kilograms (kg), and acceleration is measured in meters per second squared (m/s^2).
How much force neutons does a 110.0 kg mass exert on the floor?
If the floor is on Earth, then the weight of 110.0 kg of mass is 1078.8 newtons. (rounded)
What does fma represent?
In science f=ma stands for Force, Mass, Acceleration
