Answer:
4.3kg
Explanation:
A cat, also of weight 43.0 N, falls asleep on top of block A. If block B is now set into downward motion,
Weight is a product of mass and acceleration due to gravity. Weight is also a downward force upon a body.
From newton's second law of motion which states that the rate of change of momentum of a body is proportional to the applied force which takes place in the direction of force applied.
This law gives a formula which relate force, mass and acceleration.
Force = mass x acceleration due to gravity (g)
Given that force = 43N , g= 10m/s2
Since force(F) weight = mass(m) x acceleration due to gravity (g)
Therefore W = mg
Divide both sides by g
W/g = mg/g
Therefore,
Mass) = W/g
Mass = 43N ➗ 10m/s2
Mass= 4.3kg
The S. I unit of mass is kilogram (kg)
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