PHY 101 Lab 2

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UzNDU3NTYyMjk0/a/MjYOMzAwMjMOOTM5/details Further questions 4.The graphs show how the extension changes with stretching force for four different materials. a. Which two graphs show materials that follow Hooke's law? A B b. Which two graphs show materials that become less stiff as they are stretched? force force D C. Which graph shows a material that maintains the same stiffness throughout? force force 1. A force of 20N stretches a spring by 0.5m. The spring obeys Hooke's law. a. Calculate the spring constant including a suitable unit. b. How much force must a man use to stretch it by 1.5m? 5. A car has a weight of 240OON which is distributed equally over all four wheels. Each wheel has a spring of spring constant 400N/cm. a. Determine the force through the spring on each wheel. b. Calculate the compression of each spring when the car rests on the ground. 6.In a spring experiment the results were as follows: Force (N) Length (mpm 1 2 4 6. 7 50 58 70 74 82 9n 102 125 LELL

1) In units of newtons, what is the magnitude of the force through the Achilles tendon if he stands on one foot? 2) Calculate the force in units of newtons at the pivot of the simplified lever system shown. That force is representative of forces in the ankle joint.

The bar of negligible weight is supported by two springs each having a stiffness 180 N/m The springs are originally unstretched, and the force is vertical as shown ( Figure 1) Figure C 30 N Im B 2m Part A Determine the angle the bar makes with the horizontal, when the 30-N force is applied to the bar Express your answer using three significant figures. VAX Submit Request Amer Return to Assignment vec Provide feedback ?

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Hello Good Evening Sir,I have a question in my homework related structural statics lesson. The following below is my question. Please advice. Thank you so much Regards,Irfan

Show work Part 1 website: https://ophysics.com/r5.html PArt 2 website: https://ophysics.com/r3.html

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Determine the force (Newtons) of biceps brachii for each elbow positions given that the weight of the forearm & hands is 1.5kg at 0.15m from the elbow joint. Please show your solutions. Sample solution was provided for 30 degrees.  Elbow Angles Horizontal Distance of the weight of forear, (dx COG in meters) Force of Biceps Brachii (in Newtons) 30o dx = (sin30o)(0.15m) dxCOG = 0.075 m τ = (Fbiceps)(dx_biceps)+(FCOG)(dx_COG) τ = (Fbiceps)(0.03m)+(1.5kg)(-9.8m/s2)(0.075m) τ = equal to zero since the system is in statics 0 = (Fbiceps)(0.03m)+(1.5kg)(-9.8m/s2)(0.075m) Fbiceps = 36.75N 60o     90o     120o     150o

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Please answer the question clearly, stating how you chose the formulas and what each variable represents. Thank you!

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The First half of this question has been answered. (First 3) Needing help with the last part. Answered: 1) Solid / Ductile Material 2) Spring Constant: K = 05 = 250 N/m 3) Time Threshold: 5 seconds Unanswered / Need: Viscoscity, Charasteristic Frequency & What real world model charasteristic does this describe?

Recall that muscle generates force at 30 N/cm?. Two cross sections are taken from the rectus femoris muscle (bipennate muscle similar to the diagram below). The length and width of the first cross section is 6 cm and 5 cm respectively with a 35° angle of pennation. The length and width of the second cross section is 5.6 cm and 3 cm respectively with a 31° angle of pennation. What is the predicted maximum tendon force (FTendon) of this muscle in Newtons? Answer to the nearest 0.1 N. Freodas

Test Specimen 4140 CF steel 6061 T6 Al Gray Cast iron 40 FC Brass 360 Impact Energy (J or ft-lb) 48.5 ft-lb 25 ft-lb 12 ft-lb 27 ft-lb Impact Strength (J/m or ft-lb/in) 123.096 ft-lb/in 63.452 ft-lb/in What is the final analysis/ overall observation from the data? 30.457 ft-lb/in 68.528 ft-lb/in