Enter the force applied to the rope and the angle between the two segments into the calculator to determine the tension in the rope.

Rope Tension Formula

The following formula is used to calculate the tension in a rope:

T = F / (2 * cos(θ))

Variables:

  • T is the tension in the rope (newtons)
  • F is the force applied to the rope (newtons)
  • θ is the angle between the two segments of the rope (degrees)

To calculate the tension in the rope, divide the force applied to the rope by twice the cosine of the angle between the two segments of the rope.

What is Rope Tension?

Rope tension refers to the force exerted within a rope when it is used to support a load or transmit a force. It is an important concept in physics and engineering, particularly in situations involving pulleys, winches, or any scenario where ropes are used to lift or move objects. Understanding the tension in a rope is crucial for ensuring the safety and stability of the systems that rely on ropes.

How to Calculate Rope Tension?

The following steps outline how to calculate the Rope Tension.


  1. First, determine the force applied to the rope (F) in newtons.
  2. Next, determine the angle between the two segments of the rope (θ) in degrees.
  3. Next, gather the formula from above = T = F / (2 * cos(θ)).
  4. Finally, calculate the Rope Tension (T) in newtons.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Force applied to the rope (F) = 100 newtons

Angle between the two segments of the rope (θ) = 30 degrees