Answer Expert Verified. It is not possible for a body to have zero mass ( no body can exist without mass ) but a body can have zero weight….. Weight = Mass × Gravitational acceleration. At the center of the earth the gravitational acceleration is 0 so multiply 0 with mass and any no.
Why is weight of body is zero at Centre of earth?
By definition, the weight of a body is defined as the force by which the body is attracted by the earth’s gravitational pull towards the center of the earth. g is the acceleration due to gravity. … Thus, weight is zero where the acceleration due to gravity is zero.
Where is the maximum weight of body on earth?
Now the weight of the body is directly proportional to the acceleration due to the gravity on the surface of the earth. So the weight of the body is maximum at the poles and minimum at the equator on the surface of the earth.
What is the value of G in SI?
In SI units, G has the value 6.67 × 10–11 Newtons kg–2 m2. The direction of the force is in a straight line between the two bodies and is attractive. Thus, an apple falls from a tree because it feels the gravitational force of the Earth and is therefore subject to “gravity”.
What is the weight of a body during free fall?
Neglecting air resistance, there are no other contact forces on a body during free fall and hence, its weight is zero.
What is more likely an object with 0 or 0 weight?
It is more likely for an object to have a weight of zero because the weight is the measure of the gravitational force on an object. It is possible to weigh nearly 0 in outer space. Matter, however, is the measure of matter in an object.
Can weight be negative physics?
Since weight acts in the downward direction it will be negative. The total sum of the forces must be zero, in order for the object to be at rest. This is also in accordance with Newton’s third law, which suggests that the normal force will be equal and opposite the force of weight.
Under what conditions does your weight become zero?
Weight can be zero when acceleration due to gravity is zero. The value of ‘g’ is maximum on the surface of the Earth and decreases on going inside the surface or above the surface of the Earth. Thus, the weight of a body will be zero at the centre of the Earth.
How much is 60kg on the moon?
Given that gravity on the Moon has approximately 1/6th of the strength of gravity on Earth, a man who weighs 60kg on Earth would weigh approximately 10kg on the Moon.
Why is the weight negative?
So say there is some weight of an object, and the object’s mass is multiplied by the acceleration due to gravity pointing downwards, so the weight becomes negative when the positive mass is multiplied by a negative acceleration.
What does it mean when the weight is negative?
A positive weight represents an excitatory connection whereas a negative weight represents an inhibitory connection. This is the general explanation of negative weights others explains it as the neurons or “nodes” of an ANN correspond to the excitatory neurons of the brain.
Where can weight be negative?
Complete Step by step answer: Apparent weight is a property of objects that corresponds to how heavy the object is. This can be negative if the force of the buoyancy exceeds the weight when placed in the fluid. We have to apply some external force to balance.
What would happen to your mass and weight if you went to the moon?
A: Our weight on moon is less than it would be on Earth due to a difference of the strength of gravity on the moon. … This means that if you went to the moon you would weigh less, even though your mass stays the same!
Which is more fundamental mass or weight which varies with location?
Mass is more fundamental because it is an intrinsic property of an object. Weight varies with location depending upon the acceleration due to gravity eg. for a mass m = 10kg on Earth it`s weight is W = mg = 10 x 10 = 100N.
Why does a person feel weightless during free fall?
The reason we feel weightless is that we’re completely free of anything pushing or pulling on us. When we’re stood on the ground, the force of our feet on the ground and the ground against our feet is what makes us feel ‘weighted’.
Does weight change in free fall?
The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration.
Why do we feel weightless during free fall?
When in free fall, the only force acting upon your body is the force of gravity – a non-contact force. Since the force of gravity cannot be felt without any other opposing forces, you would have no sensation of it. … As such, you would experience a weightless sensation.
Who found the value of g?
The constant of proportionality in this equation is G – the universal gravitation constant. The value of G was not experimentally determined until nearly a century later (1798) by Lord Henry Cavendish using a torsion balance.
What is the value of g’in Centre of Earth?
The value of g at the centre of the earth is zero.
What is the value of g’in CGS system on earth?
the value of G in C.G.S system is 6.67x(10 to the power -8)dyne cm (SQUARE) g(SQUARE -2) . Its value in SI unit is 6.67x (10 to the power n).
Can Newtons weight be negative?
I learned in high school that the weight of an object equals its mass in kg times the acceleration of gravity in N/kg. An object mass cannot be negative and AFAIK, neither does the acceleration of gravity.
What is the weight formula?
The general formula to find the weight is given as, W = mg (N/kg). Here ‘g’ represents the acceleration due to gravity. On the earth, the value of g is 9.8 m/s2. It is also known as the gravitational constant.
What does negative woe signify?
Negative WOE means Distribution of Goods < Distribution of Bads. Hint : Log of a number > 1 means positive value. If less than 1, it means negative value. Many people do not understand the terms goods/bads as they are from different background than the credit risk.