Question

A box of mass 1 kg is hung from a spring scale. The reading on the spring scale is approximately 10N. What would be the reading on the spring scale if a box of mass 5 kg is hung from it? (Assume acceleration due to gravity to be 10 m/s2.)
A) 5 N
B) 10 N
C) 50 N
D) 500 N

Answer 1

The answer will be 50N.
This is because the spring reads weight and weight is mass times acceleration due to gravity.5kg*10m/s2=50N

Answer 2

Explanation:

It is given that,

When mass is, m₁ = 1 kg

The reading on the spring scale, F = 10 N

If the mass is, m₂ = 5 kg

We need to find the reading on the spring scale. The force of gravity is acting on the box which is given by :  

$F=mg$

$F=5\ kg\times 10\ m/s^2$

F = 50 N

So, the reading on the spring scale is 50 N. Hence, this is the required solution.