You Want to Move Big Things. Let’s Make It Easy
Is it hard to lift or pull something? Maybe you need to move up, or lower, or tilt something heavy. That is where a Hebel helps. At Jimi (Jimi Technology Co., Ltd.), we know all about levers and smart machines. We help you move things at the push of a button. Today, let’s look at a special lever called a third-class lever. What happens when the force is on an angle? Read on! You will see how this helps you, step by step.
A Third-Class Lever: What Is It?
A third-class lever is a simple machine. It helps us move loads fast and far.
- Fulcrum: This is the turning point. Think of your elbow.
- Effort: This is where you push or pull. Think of your hand.
- Laden: This is what you want to move. Think of a ball or stone.
In a third-class lever, the effort goes between the fulcrum and the load.
Examples:

- Your arm (when lifting a ball)
- A fishing rod
- Tweezers
- A broom
Chart: Third-Class Lever Parts
Part | What It Is | Where To Find It |
---|---|---|
Fulcrum | Pivot point | Elbow or hand grip |
Kraftaufwand | Where you push | Biceps, hand, thumb |
Laden | What moves | Object, fishing lure, dust |
This lever gives speed. You move the load a long way, with little movement at your hand. But, you need to use more force than the load. This is called mechanical disadvantage.
Why Angle Matters
Have you ever tried pushing a door not straight but at a slant? It feels harder, right? The angle at which you push or pull a lever changes the result.
- If you push straight (90°), it is easy.
- If you push at an angle, it gets harder.
So, why? Because only part of your push helps.
Lassen Sie es uns aufschlüsseln:

- Perpendicular Force: This is the helpful force. It makes the lever turn.
- Parallel Force: This does not help turning. It just pushes along the lever.
Real-world tip: Always try to push close to 90°. But, sometimes you can’t. Maybe the fish is not pulling straight, or your arm moves. Then, the angle is less. Now, only a part of your force is working.
How Do We Figure It Out? Key Formulas (Made Easy)
Torque is the turning force. We need torque to make things move.
When the force is not straight, we use this:
Torque (τ) = Force (F) x Lever Arm Length (r) x Sine of the Angle (sin θ)
- τ = F × r × sin(θ)
Table: Quick Formulas for Levers
Idea | Formula | Was es bedeutet |
---|---|---|
Torque (Angle) | τ = F × r × sin(θ) | Turning force when force is angled |
Perpendicular Force | F_perp = F × sin(θ) | Only this part makes it turn |
Mechanical Adv. | MA = Load / Effort | How easy/hard a lever feels |
Let’s see an easy example:
You push a mop (the lever) at 30° from straight up. You use 10 Newtons (N) of force. The mop handle is 1 meter long.
- The perpendicular part of your force:
10 N × sin(30°) = 10 N × 0.5 = 5 N
- The torque:
τ = 10 N × 1 m × 0.5 = 5 Nm
Only “5 N” of your push goes into turning the mop! The rest is wasted.
Why Is Mechanical Advantage Low With Angles?
A third-class lever already gives you speed, not strength.
- MA (mechanical advantage)
- If you push at an angle, MA drops again.
For example, if your angle is 60°:
- sin(60°) ≈ 0.87.
Only 87% of your force helps.
If your angle is 10°:
- sin(10°) ≈ 0.17.
Very little help.
List: How to Get the Most From Your Lever

- Push as close to 90° as you can
- Make your lever long (longer = more effect)
- Hold your load near the end
- Use tools that adjust for angle, like a flexible broom
Real-Life Examples: You See These Every Day
Your Arm Is a Lever
- Your elbow is the Drehpunkt
- Biceps pulls (the effort)
- Hand holds a ball (the load)
As you lift, your muscle pulls at angles. At 90°, you are strongest. When your arm is straight or bent a lot, the angle is less, and it feels harder.
Fishing Rods, Brooms, Tweezers, and Bats
- Fishing rods: When a fish pulls sideways, you get max bend (torque). Pulling straight down gives less.
- Brooms: The angle of your hands makes sweeping easier or harder.
- Tweezers: Only the squeeze that goes “across” the handle pinches tight.
- Baseball bats: The way you hold changes the speed and power at the tip of the bat.
Table: Everyday Third-Class Lever Uses
Tool | Fulcrum | Effort | Laden | Angle Affects? |
---|---|---|---|---|
Arm | Elbow | Biceps | Hand | Yes |
Fishing Rod | Handle | Hand/Wrist | Fish | Yes |
Broom | Bottom Hand | Top Hand | Dust | Yes |
Tweezers | Gemeinsam | Your squeeze | Small thing | Yes |
Bat | Grip/Hands | Shoulder muscles | Ball | Yes |
Smart Machines Use Levers Too: Why Jimi Is Your Best Partner
At Jimi (Jimi Technology Co., Ltd.), we design, build, and make the best linear actuators. Our machines can push, pull, raise, lower, or tilt anything you need, at the press of a button. We do not just sell parts. We give you expert solutions.
Why choose us?
- Expertise: Years of deep physics, engineering, and biomechanics third-class lever examples knowledge.
- Custom design: Our robots and actuators use leverage, angles, Und Drehmoment right, every time.
- Top products: Elektrische Linearantriebe, Hochleistungs-Linearantriebe, Aktuatoren für die industrielle Automatisierung, and more!
- Trusted: Many big companies and happy users trust us around the world.
Your challenge: You need to move something – maybe big, maybe small, maybe at an odd angle.
The Jimi way: We use the best lever principles, smart calculations (think “effort arm,” “resistance arm,” “torque equation angled force”), and strong parts so your machines work every time.
Meet the Need: How We Make Angled Force Work Better For You
- We factor in the angle for every custom job.
- Our actuators can be set at just the right spot, so you use less force, get more range of motion, and save on energy.
- Real example: You want to tilt a TV stand. Using our Servo-Linearaktuator-Fabrik can help you set the optimal lever arm length und die right force angle. You adjust, you win.
Solve Problems, Avoid Mistakes
Common Mistakes:
- Wrong angle used (not measured from lever arm)
- Not splitting force into parts (perpendicular and parallel)
- Guessing effort arm/fulcrum points
Step-by-Step Guide:
- Zeichnen Sie den Hebel und beschriften Sie Drehpunkt, Kraft und Last.
- Messen Sie den Kraftwinkel vom Hebelarm.
- Teilen Sie die Kraft mithilfe von Sinus/Cosinus in senkrechte und parallele Kräfte auf (Sie können einen Taschenrechner oder eine Tabelle verwenden).
- Verwenden Sie die richtige Formel: τ = F × r × sin(θ)
- Überprüfen Sie die Einheiten (Newton, Meter) noch einmal.
- Wenn Sie Hilfe benötigen, lassen Sie es uns wissen! Wir überprüfen Ihr Setup.
Tabellen: Kurzinformationen zu Hebeln und Winkeln
Parameter | Gerader Druck (90°) | Abgewinkelter Druck (30°) | Fast flach (10°) |
---|---|---|---|
sin(θ) | 1.0 | 0.5 | 0.17 |
Drehmoment (F=10N, r=1m) | 10 Nm | 5 Nm | 1,7 Nm |
% Effektive Kraft | 100% | 50% | 17% |
Brauchen Sie mehr Leistung? Dann holen Sie sich Hightech
Wenn normale Hebel nicht ausreichen, hat Jimi die Lösung. Mit unserem Linearantriebe für mittlere Beanspruchung Und Kolbenstangenlose Aktuatoren, Sie erhalten Stärke und Kontrolle. Wir bauen für die Industrie – und für Sie.
- Besser als Muskeln: Stellen Sie genau den richtigen Winkel und die richtige Kraft ein. Drücken Sie einen Knopf. Sie gewinnen.
- Sicher und stark: Keine falschen Hebelarme oder vergeudete Kraft mehr.
- Intelligentes Design: Unsere Ingenieure verwenden die richtige Mathematik aus der Physik, darunter „Drehmoment aufgrund einer nicht senkrechten Kraft“, „mechanischer Vorteil“ und „Kraftmomenthebel im Winkel“.
Wichtige Erkenntnisse: Jede Bewegung zählt
- Hebel dritter Klasse Machen Sie die Dinge schnell und weit, aber Sie arbeiten härter.
- Der Winkel ist wichtig: Nur der Teil Ihrer Kraft, der über den Hebel zieht (nicht entlang), wird Ihnen helfen.
- Für weniger Kraftaufwand drücken Sie näher an 90°.
- Bei Jimi entwickeln wir Systeme, die Gewalt klug einsetzen, Energie sparenund halten lange.
Ready to Get Started?
Lassen Sie uns Ihren nächsten Job machen einfach und intelligent. Vertrauen Sie bei all Ihren Hebel-, Aktuator- und Automatisierungsanforderungen auf Jimi.
Mehr sehen:
Quellen:
- Einfache Maschinen: Physikunterricht (physicsclassroom.com)
- Jimi Technology Co., Ltd. Technische Bibliothek
- Biomechanik: Hebelanalyse des menschlichen Körpers in der realen Welt
Lassen Sie uns zusammenarbeiten. Drücken Sie den Knopf. Bewegen Sie die Welt.