The elastic energy stored in your tendons can contribute up to 35% of your energy needs when running. Sports scientists have stu
died the change in length of the knee extensor tendon in sprinters and nonathletes. They find (on average) that the sprinters tendons stretch 41 mm, while nonathletes' stretch only 33 mm. The spring constant for the tendon is the same for both groups, 33 N/mm. What is the difference in maximum stored energy between the sprinters and the nonathlethes?
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Answer:
Explanation:
Given that:
The radius of the table r = 16 cm = 0.16 m
The angular velocity = 45 rpm
=
= 4.71 rad/s
However, the relative velocity of the bug with turntable is:
v = 3.5 cm/s = 0.035 m/s
Thus, the time taken to reach the bug to the end is:
t = 4.571s
So the angle made by the radius r with the horizontal during the time the bug gets to the end is:
Now, the velocity components of the bug with respect to the table is:
Also, for the vertical component of the velocity