help please??? What does this mean mathematically calculate the weight and mass of the unknown?

Question

what is this telling me to do am i suppose to use f=ma and if so am i suppose to use 9.8 as accleration please helpp ill choose best answer asap

Answer 1

the mass of an object is m, it is a constant. For instance, a ball can have a mass of 2kg. Mass is not a force.



The weight of an object is the mass times gravitational acceleration or mg. Weight is a force that acts in the direction of the gravitational acceleration. The weight of the fish from above would be 2kg * 9.8m/s^2 = 19.6 N



So, if the fish was in the air, it would experience a force due to its weight, mg, downwards.

So F = ma

mg = ma

the m's cancel.

a = g



This shows that the acceleration of any object due to gravity alone is independent of mass. Aka, a 2kg and 200kg fish accelerate at the same rate due to gravity.

Answer 2

GIVEN



F = ma



where



F = force acting on the mass

m = mass

a = acceleration of the mass





To calculate for the mass,



m = F/a



and to determine the weight,



W = mg



where



g = acceleration due to gravity = 9.8 m/sec^2 (constant)



Hope this helps.

Answer 3

your question is very hard to understand.



F=ma

if you have F in Newtons and a is 9.8 m/s^2, then the mass that you get by dividing, F/a, is in kg.



so do this division, and you will get the mass in kg.



weight is not the same as mass. weight depends on gravity.

W=m*g

i.e. weight in Newtons is equal to mass (kg) times the acceleration due to gravity (m/s^2).



it's hard for me to be more specific - you didn't provide many details. the above should be enough for you though i think (hope)...



cheers

Answer 4

Since I don't know what the problem is, you need to calculate one of them and then the other is given by weight (N) = mass (kg) * 9.8 m/s² assuming it is on the surface of the earth.