Question

2. The body with mass m = 300 g is hung on the hook of a force gauge. Calculate the force of gravity, the force of tension exerted by the hook on the body and the weight of the body 

Answer 1

The force of gravity (or the weight of the body) can be calculated as follows:

$$W=mg=0.3\ kg\cdot9.8\ \dfrac{m}{s^2}=2.94\ N.$$

The force of tension can be found from the Newton's Second Law of Motion:

$$T-mg=0,$$ $$T=mg=2.94\ N.$$