Question

two forces act on a block as shown in the picture.
what is the net force on the block?
10 n to the left
10 n to the right
30 n to the left
30 n to the right

Explanation:

Step1: Define positive direction

Let the right - hand direction be positive.

Step2: Calculate net force

The force of \(20N\) is to the right (positive) and the force of \(10N\) is to the left (negative). The net force \(F_{net}=20N+( - 10N)\).

$$F_{net}=20 - 10=10N$$

Answer:

10 N to the right