Related Experiment Video
Updated: Oct 18, 2026

Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors
Published on: October 3, 2025
Torque Production Using Hand Cranks in a Simulated Gear-Operated Valve Opening Task
Lawrence J H Schulze1, Edward Stanton1, Anupam Patel1
1a University of Houston , USA.
Abstract:
Hand cranks are used in a variety of industries to actuate valves and in other gear-operated applications. In order to evaluate these types of operations and their compatibility with operator strength capabilities, a rotational dynamometer was used to measure torque production capability of operators using a hand crank at different heights and angles (with respect to the coronal plane). The tests were conducted for both clockwise and counterclockwise rotations using the dominant arm of each test participant. A total of 18 tests were completed by each of five male right-handed test participants. A 0° declination angle, counterclockwise operation, and both 40.65 cm and 60.96 cm heights were found to be associated with the greatest torque production capabilities.
Related Concept Videos
Torque
Torque can be considered as the rotational counterpart to force. Since forces change the translational...
Net Torque Calculations
Screw: Problem Solving
To evaluate the...
Angle of Twist: Problem Solving
Mechanical Efficiency of Real Machines
However, in reality, no machine can be truly ideal, and all of them experience some...
Frictional Forces on Screws
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...

