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This setup uses pulleys to transfer downward motion into tension along a rope. Lowering the engine crane increases the force applied through the system. The result is a controlled demonstration of gravity, tension, and mechanical advantage.

Theogcfu

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40,260 次观看 • 7 个月前 •via X (Twitter)

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What Looks Like A Complex Set Of Spinning Parts Is The Core Of How Trucks Convert Engine Power Into Motion. A drivetrain system transfers torque from the engine through the transmission, driveshaft, and differential to the wheels. Each component plays a specific role. The transmission adjusts torque and speed, the driveshaft carries rotational force, and the differential distributes power between wheels while allowing them to rotate at different speeds during turns. Seeing the system in motion reveals how precisely synchronized these components must be to handle heavy loads and maintain efficiency under stress. In Heavy Vehicles, Power Is Only Useful When It Is Controlled.

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"You should lower the weight extra slowly, for time under tension." No. Muscles are 30 to 50% stronger eccentrically than concentrically. The lowering portion never imposes the same tension as the lift, regardless of how long you drag it out. Slow eccentrics force a lighter weight, exacerbate muscle damage, drive up fatigue, and cost you stimulus where it matters. Two to three seconds. Controlled, not slow. Then drive the weight up with intent. Stop performing the descent. Perform the ascent.

"You should lower the weight extra slowly, for time under tension." No. Muscles are 30 to 50% stronger eccentrically than concentrically. The lowering portion never imposes the same tension as the lift, regardless of how long you drag it out. Slow eccentrics force a lighter weight, exacerbate muscle damage, drive up fatigue, and cost you stimulus where it matters. Two to three seconds. Controlled, not slow. Then drive the weight up with intent. Stop performing the descent. Perform the ascent.

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Time under tension is a red herring. If TUT mattered, planks would build massive abs. They don't. Because there's no progressive overload of mechanical tension. The plank gets longer. The abs don't. A 5-rep set takes around 15 seconds. A 15-rep set takes around 45 seconds. Both can produce the same hypertrophy if both are taken close enough to failure. The growth doesn't come from the duration. It comes from the mechanical tension in the hard reps. The ones at the end of the set where the bar is barely moving and the muscle is recruiting every available fibre to finish the rep. You can hold a light weight for 60 seconds and get nothing. You can lift a heavy weight for 15 seconds and grow. Time doesn't build muscle. Tension does. Stop counting seconds. Start counting how close you got to failure.

Time under tension is a red herring. If TUT mattered, planks would build massive abs. They don't. Because there's no progressive overload of mechanical tension. The plank gets longer. The abs don't. A 5-rep set takes around 15 seconds. A 15-rep set takes around 45 seconds. Both can produce the same hypertrophy if both are taken close enough to failure. The growth doesn't come from the duration. It comes from the mechanical tension in the hard reps. The ones at the end of the set where the bar is barely moving and the muscle is recruiting every available fibre to finish the rep. You can hold a light weight for 60 seconds and get nothing. You can lift a heavy weight for 15 seconds and grow. Time doesn't build muscle. Tension does. Stop counting seconds. Start counting how close you got to failure.

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sadie sink and noah jupe wtf is this chemistry omg… like why am i feeling the tension through a literal SCREEN

sadie sink and noah jupe wtf is this chemistry omg… like why am i feeling the tension through a literal SCREEN

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