Math Problem Statement
A torque wrench grips a bolt at the origin of coordinates, with the free end of the torque wrench located at the point (r0, 0, 0). The force on this end of the torque wrench points in the direction of V =
10, 0, 16
. Note that r =
r0, 0, 0
in this problem. Compute the length of the lever arm
L
needed to produce a torque with magnitude 300 ft-lb if the magnitude of the force is 100 pounds.
Solution
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Math Problem Analysis
Mathematical Concepts
Vector Cross Product
Torque Calculation
Trigonometry
Formulas
Torque (τ) = r × F
|τ| = |r| |F| sin(θ)
Cross product: r × F
Theorems
Cross Product of Vectors
Torque Formula
Suitable Grade Level
Undergraduate Physics or Advanced High School Physics