Basic Biomechanics
7th Edition
ISBN: 9780073522760
Author: Susan J Hall
Publisher: McGraw-Hill Education
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Chapter 14, Problem 4AP
A 7.27-kg shot makes seven complete revolutions during its 2.5-s flight. If its radius of gyration is 2.54 cm, what is its angular momentum? (Answer: 0.0817 kg m2/s)
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The above computation of momentum (the term used by Isaac Newton), or “impetus” (the term used by Jean Buridan), is based on which of the following equations?
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Chapter 14 Solutions
Basic Biomechanics
Ch. 14 - If you had to design a model of the human body...Ch. 14 - Construct a table displaying common units of...Ch. 14 - Skilled performance of a number of sport skills is...Ch. 14 - Prob. 5IPCh. 14 - How much angular impulse must be supplied by the...Ch. 14 - Given the following principal transverse axis...Ch. 14 - A volleyball players 3.7-kg arm moves at an...Ch. 14 - A 50-kg diver in a full layout position, with a...Ch. 14 - Prob. 10IPCh. 14 - The radius of gyration of the thigh with respect...
Ch. 14 - A 0.68-kg tennis ball is given an angular momentum...Ch. 14 - A 7.27-kg shot makes seven complete revolutions...Ch. 14 - Prob. 5APCh. 14 - The patellar tendon attaches to the tibia at a 20...Ch. 14 - A cavewoman swings a 0.75-m sling of negligible...Ch. 14 - A 7.27-kg hammer on a 1-m wire is released with a...Ch. 14 - Discuss the effect of banking a curve on a...
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- A cart that weighs 15 kg is rolling down a hill with a velocity of 4.2 m/s2. What is the kinetic energy of the cart?arrow_forwardThe “mean-speed theorem” for calculating average velocity under constant acceleration, developed by Thomas Bradwardine and the Mertonian Calculators at Oxford University, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) C. (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/timearrow_forwardAccording to Jean Buridan’s equation, the momentum or “impetus” of an 8 kilogram mass moving at 48 meters per second would be: 192 kilogram-meters per second 384 kilogram-meters per second 576 kilogram-meters per second 768 kilogram-meters per second 960 kilogram-meters per secondarrow_forward
- In terms of mass and acceleration, what is the equation for force?arrow_forwardFrom the equation of a lineweaver-burke plot, calculate Km and Vmax. Show your work and include units. The equation is y=393.4x +8.4337arrow_forwardThe “mean-speed theorem” for finding average velocity under constant acceleration, proposed by the Oxford Calculators, and demonstrated geometrically by Nicole Oresme, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/timearrow_forward
- A scientist was investigating if differences in the frictional work performed on a model car can change depending on its mass (in grams) and whether the car moves up or down an inclined plane. They decided to measure the amount of frictional force experienced by the model car and the distance it traveled in meters. The scientists were able to evaluate the frictional work using the following data. Mass (g) Distance (m) Force Work Done by Friction (J) car going up the incline 100 39 0.063 2.457 car going down the incline 70 39 0.2309 ? It is known that the relationship between force and distance determines the work done by friction (W+). W₁ = fd Wf work done by friction f = force d = distance Question: How much work done by friction was exerted on the car as it moved down the inclined plane? You may use a calculator. 1 2.457 9.005 11.46 16.16 PREVIOUS FINISHarrow_forwardUsing the above “mean-speed theorem”, calculate the average velocity of a car with constant acceleration from 0 km/hour (initial speed) to 80 km/hour (final speed) over a 5-minute period of time. average velocity over 5 minutes = 16 kilometers/hour average velocity over 5 minutes = 20 kilometers/hour average velocity over 5 minutes = 24 kilometers/hour average velocity over 5 minutes = 32 kilometers/hour average velocity over 5 minutes = 40 kilometers/hourarrow_forwardAn airplane flying directly eastward at a constant speed travels 323 km in 2.0 h. what is the average velocity of the planearrow_forward
- Using the Michaelis-Mentan graph pictured (graphing initial velocity and PNPP concentration), identify Vmax and Km as well as possible. Then, using the Lineweaver-Burk graph (graphing 1/Vo and 1 / PNPP concentration), label the reciprocals of Vmax and Km on the graph and use them to calculate Km and Vmax.arrow_forwardRotate the ball horizontally on an 80 cm long non-stretchable cord with angular velocity of 3 s^(-1). After ten seconds of clockwise rotation, the cord breaks. At what speed and in what direction does the ball fly, if it was faced north at time t = Os? Where and after how much time does the ball land on the ground that is 1 m below the plaine in which we rotate the string? {Solution: v= (0.37 m/s,2.37 m/s); d=1.07 m, t=0.447 s.) }arrow_forwardGive an interpretation for the following graph:arrow_forward
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