GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It decreases.
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It increases.
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It remains the same.
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It approaches infinity.
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Detailed explanation-1: -If the angle is zero, the torque is zero; if the angle is 90°, the torque is maximum. The torque in (Figure) is positive because the direction of the torque by the right-hand rule is out of the page along the positive z-axis.
Detailed explanation-2: -The magnitude of the torque depends on: Radius r: Increasing the radius increases the torque. Angle between the force and lever arm : Directing a force perpendicular to the lever arm increases the torque.
Detailed explanation-3: -Torque is defined as =r×F=rFsin(). In other words, torque is the cross product between the distance vector (the distance from the pivot point to the point where force is applied) and the force vector, ‘a’ being the angle between r and F.
Detailed explanation-4: -"The torque produced by the elbow flexors is greatest at 90 degrees flexion because the force of flexion is farthest away from the axis (greatest perpendicular distance) and the actin and myosin overlap are optimum for force production."