what is the weight of a 6kg object on the surface of Mars
If you look up "Mars" on the Wikipedia (or some other source), and specifically look for "Surface gravity", you will see that it is 3.711 meter / second squared. This is equivalent to 3.711 newton / kilogram. That is, each kilogram has a weight of 3.711 newton.
6kg
5-6kg
In Mathematics, an average is also known as the Arithmetic Mean, a precise number calculated by dividing the sum of a set of numbers by their count, e.g., 5 objects with a total weight of 30kg have an average weight of 6kg. Judging whether 6kg is an ordinary or normal weight for this type of object will require more general information about this kind of object. Usually a range of weights would be accepted as normal.
A gain of 6 kg in weight
the answer is 4m/s^2
6kg 750:g
6Kg is the same as 6,000 grams.
To balance the scales, the weights on each side must have the same total mass. In this case, the left side has a total mass of 10kg (1kg + 4kg + 5kg) and the right side has a total mass of 16kg (2kg + 6kg + 8kg). To balance them, you need to swap the 4kg weight on the left side with the 6kg weight on the right side. This would make both sides have a total mass of 14kg (1kg + 6kg + 5kg = 2kg + 4kg + 8kg).
Any object on the moon weighs 1/6th of what it weighs on Earth. For e.g., a 6kg object will weigh only 1kg on the moon.
600kg. That would be one tiny horse if it was only 6kg
Strictly, kg (kilogrammes) is a unit of weight rather than mass, which is measured in N (Newtons). This is important, because the MASS of an object does not change, whereas its WEIGHT does change according to the gravitational pull it is experiencing. On earth 1kg is about 10N. On the moon, say, something weighing 1kg would have a MASS of a little over 60N. If we change the word 'mass' in your question to 'weight', then the answer would be 'anything greater than 5kg'. If not, then 'anything greater than 50N subject to gravitational forces on the Earth's surface'. An object's INERTIA is the force that must be overcome in order to change its position (if stationary): so, it is clearly easier to move a 5kg object than it is to move any object that is heavier.