Physics

To find the stretch in the spring due to the pulling force, we can analyze the forces acting on the object.

 

Given:

Mass of the object () = 4 kg

Spring constant () = 120 N/m

Tension in the rope () = 30 N

Angle of the rope with the horizontal = 45°

 

Step 1: Resolve the tension into components

The tension can be resolved into horizontal and vertical components:

1. Horizontal component ():

 

2. Vertical component ():