BIO Tendons . Tendons are strong elastic fibers that attach muscles to hones. To a reasonable approximation, they obey Hooke’s law. In laboratory tests on a particular tendon, it was found that, when a 250-g object was hung from it, the tendon stretched 1.23 cm. (a) Find the force constant of this tendon in N/m. (b) Because of its thickness, the maximum tension this tendon can support without rupturing is 138 N. By how much can the tendon stretch without rupturing and how much energy is stored in it at that point?
BIO Tendons . Tendons are strong elastic fibers that attach muscles to hones. To a reasonable approximation, they obey Hooke’s law. In laboratory tests on a particular tendon, it was found that, when a 250-g object was hung from it, the tendon stretched 1.23 cm. (a) Find the force constant of this tendon in N/m. (b) Because of its thickness, the maximum tension this tendon can support without rupturing is 138 N. By how much can the tendon stretch without rupturing and how much energy is stored in it at that point?
BIO Tendons. Tendons are strong elastic fibers that attach muscles to hones. To a reasonable approximation, they obey Hooke’s law. In laboratory tests on a particular tendon, it was found that, when a 250-g object was hung from it, the tendon stretched 1.23 cm. (a) Find the force constant of this tendon in N/m. (b) Because of its thickness, the maximum tension this tendon can support without rupturing is 138 N. By how much can the tendon stretch without rupturing and how much energy is stored in it at that point?
A 2.35-kg uniform bar oflength l = 1.30 m is heldin a horizontal position bythree vertical springs as inFigure P8.83. The two lowersprings are compressed andexert upward forces on thebar of magnitude F1= 6.80 Nand F2 = 9.50 N, respectively.Find (a) the force Fs exertedby the top spring on the bar,and (b) the location x of the upper spring that will keep thebar in equilibrium.
A two-dimensional, conservative force is zero on the x- and y-axes, andsatisfies the condition ⎛⎝dFx /dy⎞⎠ =⎛⎝dFy /dx⎞⎠ =⎛⎝4 N/m3⎞⎠xy . What is the magnitude of the force at the pointx = y = 1 m?
A scene in a movie has a stuntman falling through a floor onto a bed in the room below. The plan is to have the actor fall on his back, but a researcher has been hired to investigate the safety of this stunt. When the researcher examines the mattress, she sees that it effectively has a spring constant of 77144 N/m77144 N/m for the area likely to be impacted by the stuntman, but it cannot depress more than 13.33 cm13.33 cm without injuring him.
To approach this problem, consider a simplified version of the situation. A mass falls through a height of 3.92 m3.92 m before landing on a spring of force constant 77144 N/m.77144 N/m. Calculate the maximum mass that can fall on the mattress without exceeding the maximum compression distance.
maximum mass:
Based on this crude measurement, is the stunt safe using the proposed mattress?
yes
no
cannot determine
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Work and Energy - Physics 101 / AP Physics 1 Review with Dianna Cowern; Author: Physics Girl;https://www.youtube.com/watch?v=rKwK06stPS8;License: Standard YouTube License, CC-BY