Skeletal Muscle Contraction x- he he ck nd re nd he l- Materials for This Activi

Question

Skeletal Muscle Contraction x- he he ck nd re nd he l- Materials for This Activity Gripper or other dynamometer capable of measur- ing the force of contraction Work in pairs. Obtain a gripper or other dynamo- meter, and read the directions for use 1. Squeeze the gripper five times, and record the average strength of contraction. to 2. Rest for one minute, squeeze the gripper five times, and record the average strength of contraction. 3. Rest for one minute, squeeze the gripper five times, and record the average strength of contraction. Which average was the lowest?

Explanation / Answer

for the given gripper, we grip and ungrp it five times per trailand note4 the measuerd force by the digital meter ( Use only 1 hand)

Trail 1

F1 52 N

F2 50 N

F3 51 N

F4 50 N

F5 48 N

Fav 50.2 N

Trial 2

F1 51 N

F2 51 N

F3 50 N

F4 47 N

F5 50 N

Fav = 49.8 N

Trial 3

F1 52 N

F2 50 N

F3 47 N

F4 46 N

F5 48 N

Fav 48.6 n

HENCE

from the three trials, the average foce applied on the gripper by the hand is lowest in the third trial

this means the hand gets tired after work and hence can now applyt less force

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