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April 19, 2014

Search: biomechanics

Number of results: 95

Basic Biomechanics
This looks more like economics than biomechanics. http://en.wikipedia.org/wiki/Biomechanics
Sunday, September 29, 2013 at 10:51am by Ms. Sue

Basic Biomechanics
Basic Biomechanics. No kidding.
Friday, September 27, 2013 at 7:57pm by bobpursley

Science/Math
A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that included the word problem is: Basic Biomechanics ...
Monday, September 30, 2013 at 12:36pm by Walter

Science/Math
Word Problems pages 18-19 A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that included the word problem...
Sunday, September 29, 2013 at 6:59pm by Walter

Science/Math
John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John? The textbook that included the word problem is: Basic ...
Monday, September 30, 2013 at 12:36pm by Walter

Science/Math
Word Problem page 19 John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John? The textbook that included the ...
Sunday, September 29, 2013 at 7:04pm by Walter

Biomechanics
.4040
Saturday, March 9, 2013 at 4:39am by ben

biomechanics
need help
Thursday, February 21, 2013 at 2:39pm by john

biomechanics
694.44rad/s
Tuesday, February 28, 2012 at 10:27am by gary

biomechanics
sin 45 = 1/√2
Monday, March 18, 2013 at 11:41am by Steve

biomechanics
did u manage to work this out?
Wednesday, November 14, 2012 at 9:09am by kate

Biomechanics
3 * 2 * pi radians / 1.59 seconds
Saturday, March 9, 2013 at 3:44am by Damon

Biomechanics
Could u explain Damon how do u got .5 for xi
Saturday, March 9, 2013 at 4:02am by Vanitha

Biomechanics
Damon could u explain this question please
Saturday, March 9, 2013 at 4:39am by Vanitha

Biomechanics
h=v²/2g v=sqrt(2gh)=...
Wednesday, July 31, 2013 at 1:52am by Elena

physics
Thanks bobpursely I need this for my Quantitative Biomechanics class
Friday, March 23, 2012 at 7:02pm by Melissa

biomechanics
F=Ma, solve for a. a=108.1 N/10Kg Answer in m/s^2
Thursday, March 14, 2013 at 11:07am by Devron

Biomechanics
What does "chorten" mean? Any additional work depends upon what is done.
Friday, August 5, 2011 at 12:56pm by drwls

Biomechanics
A cyclist completes 3.0 revolutions in 1.59s what is the angular velocity?
Saturday, March 9, 2013 at 3:44am by Vanitha

Biomechanics
How do you compute the additional work done after a stretch-chorten cycle?
Friday, August 5, 2011 at 12:56pm by Leah

Biomechanics
x = Xi + Vi t + (1/2) a t^2 x = .5 (950 deg/s^2)(.15s)^2 = 10.7 degrees
Saturday, March 9, 2013 at 4:02am by Damon

biomechanics
why the initial velocity u divided 20/√2. i cant understand. can u explain it ..
Monday, March 18, 2013 at 11:41am by yaya

biomechanics
Suggest how a snail and a large dog develop linear momentum.
Sunday, March 24, 2013 at 12:56pm by yaya

biomechanics
Briefly describe the distribution problem and the two techniques used to overcome it.
Wednesday, November 14, 2012 at 9:13am by dmkp

Biomechanics
Flexion of the elbow and supination of the forearm occur about what axes respectively?
Saturday, March 22, 2014 at 4:13pm by Evelyn

Biomechanics
Flexion of the elbow and supination of the forearm occur about what axes respectively?
Sunday, March 23, 2014 at 2:12pm by Evelyn

Biomechanics
What will be the vertical velocity at take off for a high jumper in order for them to clear a height of 2m?
Wednesday, July 31, 2013 at 1:52am by Natalie

Math/Science
Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S. (Petroleum Special), 30 percent in N (Newshoe), and 10 percent in B & S (...
Monday, September 30, 2013 at 12:35pm by Walter

biomechanics
An individual is running around a turn with an 11-m radius at 3.75 m/s. What is the runner's centripetal (radial) acceleration?
Wednesday, November 4, 2009 at 8:48pm by tina

Physics
I haven't gotten to the chapter on friction yet, so I am totally clueless...I am still on kinematics and biomechanics right now.
Thursday, October 22, 2009 at 3:21pm by Nikita

Biomechanics
You are doing yourself a disservice by mislabeling your problems, then having teacher go in to answer it and the subject matter is irrelevant to their expertise.
Friday, September 27, 2013 at 8:17pm by bobpursley

Biomechanics
Hint the tutor gave for this problem is to use more than one equation to get this Damon thanks for answering could u explain these please in detail
Saturday, March 9, 2013 at 4:02am by Vanitha

Science/Math
Math Problem page 18 Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S. (Petroleum Special), 30 percent in N (Newshoe), and 10...
Sunday, September 29, 2013 at 7:12pm by Walter

physics (biomechanics)
briefly explain how an athlete competing in the long jump can prevent the trunk from pitching forward after take-off
Wednesday, November 30, 2011 at 1:22pm by Lauren

Biomechanics
A golfer at the tee swings their driver and completes a downswing in 0.27s through a range of 196.1degree. What is the average angular velocity of the club head
Saturday, March 9, 2013 at 3:46am by Vanitha

Biomechanics
Please do not post any more questions with the wrong School Subject. Didn't you read the responses that bobpursley made to your last two erroneously labeled posts?
Friday, September 27, 2013 at 8:29pm by Ms. Sue

biomechanics
If a soccor ball with a mass of 0.43 kg is kicked while it is in the air, with a force of 15 N oriented 32 degrees above the horizontal, what is the resultant acceleration?
Friday, April 8, 2011 at 12:38pm by katie

biomechanics
If a kicker produces a torque of 8Nm with her muscles and the resulting angular acceleration of her leg is 20rad/m2, what is the moment of inertia of her leg?
Tuesday, April 6, 2010 at 7:28pm by Jane

biomechanics
f a 20.8 N horizontal force must be applied to slide a 10.1 kg box along the floor at constant velocity what is the coefficient of sliding friction between the two surfaces?
Sunday, May 20, 2012 at 6:33pm by Anonymous

biomechanics
By actual measurement it has been shown that a sprinter pushes 1700N on each foot at the starting blocks . The right at 34o and the left at 52o Calculate the vertical component for each foot.
Saturday, March 23, 2013 at 9:14pm by yaya

biomechanics
During an elbow flexion exercise, the relative angle at the elbow is 22 degrees at .3s and 155 degress at .62s. What is the angular velocity of the elbow?
Wednesday, November 4, 2009 at 8:34pm by anonymous

Biomechanics
A long jumper runs down the runway and it is measured that her vertical velocity is 2.7 m/s and her vertical velocity is 6.6 m/s. what is her angle of takeoff?
Sunday, February 2, 2014 at 9:39am by Anonymous

biomechanics
you are trying to lift a 10 kg dumbbell by pulling upward on it with a 108.1 N force. what wil lthe acceleration of the dumbbell be as a result of this force?
Thursday, March 14, 2013 at 11:07am by Anonymous

biomechanics
If a 100 kg adult sits on a first class lever 2.3 meters away from the axis of rotation...how far back do I need to sit (145 lbs) on the other side to balance the lever?
Wednesday, October 23, 2013 at 9:23pm by Anonymous

Basic Biomechanics
55*1.1 = 60.5 44*1.5 = 66.0 The owl is more effective than the eagle. You did not say if the bow or the stern was still on the road. If the stern, then the owl saved the situation.
Friday, June 8, 2012 at 6:32pm by Damon

Biomechanics
196.1 deg (pi radians/180 degrees) = 3.42 radians so w = angular velocity = 3.42 radians / .27 sec
Saturday, March 9, 2013 at 3:46am by Damon

Biomechanics
A 10 kg block sits motionless on a table in spite of an applied horizontal force of 2 N. What are the magnitudes of the reaction force and friction force acting on the block?
Thursday, April 18, 2013 at 10:54pm by Jami

Biomechanics
If an average net force of 20N at 45* is applied to a 0.35 kg water balloon for 0.12s. how far away should the catcher stand? Assume release height and cathc height are the same and air resistance is not a factor.
Monday, November 29, 2010 at 12:03am by Bob

Biomechanics
If John was pushing a 300 kg desk across the floor with a constant acceleration of 3.5 m/s squared, how much force would he have to apply to the desk to maintain the acceleration, considering the coefficient of kinetic friction is 0.60?
Thursday, February 17, 2011 at 4:17pm by Jennifer

Biomechanics
A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location?
Friday, September 27, 2013 at 8:29pm by Walter

physics/biomechanics
1. Once a person is in the air during a jump can they modify their path in the air of: a) their head b) Their whole body centre of gravity c) their hip joint (yes or no) 2. To achieve peak horizontal distance on flat ground, what should the angle of take off be?
Thursday, February 7, 2013 at 12:15am by tasneem

physics/biomechanics
1. Once a person is in the air during a jump can they modify their path in the air of: a) their head b) Their whole body centre of gravity c) their hip joint (yes or no) 2. To achieve peak horizontal distance on flat ground, what should the angle of take off be?
Thursday, February 7, 2013 at 10:49am by tasneem

Basic Biomechanics
A sailboat heads north at 3 m/s for 1 hour and then tacks back to the southwest (at 45 degree to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location?
Sunday, September 29, 2013 at 10:54am by Walter

biomechanics
a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.
Thursday, February 16, 2012 at 7:34pm by J

biomechanics
F = m a The acceleration component due to the kick, a, will be in the direction of the force, F. Strictly speaking, you must add the acceleration of gravity, g (directed downwards) to that. The correct answer is the vector sum of F/m = (34.9 m/s^2 @32 degrees up) and g (9.8 m...
Friday, April 8, 2011 at 12:38pm by drwls

Biomechanics
John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200m, which he covers at 4.5 m/s. At what average speed must Al run to beat John?
Friday, September 27, 2013 at 8:17pm by Walter

Basic Biomechanics
John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John?
Sunday, September 29, 2013 at 10:53am by Walter

biomechanics
A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same level as the ground ...
Monday, March 18, 2013 at 11:41am by yaya

BIOMECHANICS
The NCAA requires that a basketball dropped from a height of 1.83 m (measured to the bottom of the ball) bounce to a height of 1.24 to 1.37 m (measured to the top of the ball). Assuming the diameter of a typical basketball is 0.25 m, calculate the allowable range of ...
Sunday, December 5, 2010 at 8:26pm by jhkh

Basic Biomechanics
A car teeters on the edge of a cliff. A eagle weighing 55 N lands on the hood 1.1 M from the edge of the cliff which functions as an axis. At the same time, an owl weighting 44 N lands on the trunk 1.5 m from the axis. What are the torques exerted by the birds? What will ...
Friday, June 8, 2012 at 6:32pm by Joshua Mclaurin

Biomechanics
During the support phase of walking the absolute angle of the thigh has the following angular velocities frame 38 0.6167s 1.033rad/s frame 39 0.6333s 1.511rad/s 40 frame 0.6500s 1.882rad/s calculate the angular acceleration at frame 40 from frame 38
Saturday, March 9, 2013 at 4:39am by Vanitha

Biomechanics
A diver is trying a new more and is attempting to increase his angular acceleration in order to increase the angular displacement and thus produce more rotations from a standing start on the board the diver accelerates at 950 degree/s/s.what is the angular displacement over 0....
Saturday, March 9, 2013 at 4:02am by Vanitha

biomechanics
The vertical component of the initial velocity is 20/√2 = 14.14 m/s So, the height y = 2 + 14.14t - 4.9t^2 when does y=0? At t=3.02 sec Since the horizontal component of the velocity does not change, in those 3.02 seconds, the ball traveled 3.02*14.14 = 42.7 m
Monday, March 18, 2013 at 11:41am by Steve

Biomechanics
Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larryís acceleration in m/s2? What is happening to the elevator at this instant (i.e...
Tuesday, October 22, 2013 at 6:55pm by Zack

Biomechanics
A pitched ball with a mass of 1 kg reaches a catcher's glove traveling at a velocity of 28 m/s. How much momentum does the ball have? how much impulse is required to stop the ball? If the ball is in contact with the catcher's glove for 0.5 s during the catch, how much average ...
Sunday, November 21, 2010 at 1:39pm by Walter

Biomechanics
A ball is thrown vertically upwards in the air at a velocity of 50(m/s) and reaches a maximum height of 20(m). Calculate the time when the ball reaches the 10(m) mark, while going up and coming down. Use the following equation of motion: y(f) = y(i) + v(i)t+1/2at^2 y(f) and y(...
Tuesday, July 17, 2012 at 10:55pm by Jack

biomechanics
a sailboarder is zipping northeast across the river wit ha velocity of 10 m/s relative to the water the river current is moving the water north at a velocity of 3 m/s downstream. if the angle between the relative velocity of the sailboard and the river current is 30 degrees, ...
Thursday, February 21, 2013 at 2:39pm by Anonymous

biomechanics
Calculate the magnitude of the force required to cause an anterior dislocation of the glenohumeral joint given that he force has a lever arm of 52 cm, the maximum magnitude of the resistance force is 1080 N and the resistance force has a lever arm of 4.3 cm.
Wednesday, December 12, 2012 at 7:44am by dmkp

biomechanics
calculate the following body segment parameters for the thigh of a subject with a height of 180cm and mass of 72kg a) segment mass b) segment length c) centre of mass position relative to proximal end d) radius of gyration about proximal end e) Moment of Inertia about proximal...
Wednesday, November 14, 2012 at 9:03am by dmkp

Basic Biomechanics
http://www.jiskha.com/display.cgi?id=1380328187
Sunday, September 29, 2013 at 10:54am by Ms. Sue

maths/physics/biomechanics
4m/s @ 180 Deg + 2m/s @ 45 Deg. X = 4*cos180 + 2*cos45 = -2.586 m/s. Y = 0 + 2*sin45 = 1.414 m/s. tanAr=Y/X = 1.414 / -2.586 = -.054687, Ar = -28.7 Deg. = Reference angle. A=-28.7 + 180=151.3 Deg.,CCW= W28.7Deg N. V = X/cosA = -2.586 / cos151.3 = 2.95 m/s @ W28.7Deg.N. d = 2....
Thursday, February 9, 2012 at 5:12pm by Henry

Basic Biomechanics
Wendell invests $10,000 in a stock por5tfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans & Sprouts at $2.50 per share. He places 60% of the money in P.S., 30% in N, and 10% in B & S. With market values changing (P.S. down $3.12, N up 80...
Friday, September 27, 2013 at 7:57pm by Walter

Biomechanics
A hammer thrower is trying a new throw by adjusting the arm length to increase angular velocity technique1 angular velocity of15.4rad/ s with the hammer being 139.8 cm from the shoulder joint in technique2 they rotate with an angular velocity of 13.9 rad/s with the hammer ...
Saturday, March 9, 2013 at 3:19pm by Vanitha

Biomechanics
Two ice skaters start out motionless in the center of an ice rink. They then push each other apart. The first skater (mass = 80 kg) moves to the right with a velocity of 2.5 m/s. The second skater (mass = 58 kg) moves to the left at some unknown speed. If we assume that the ...
Sunday, April 6, 2014 at 11:21pm by Brendan

biomechanics
for a man of mass 75kg and height 185 cm claculate the following using standard anthropometric data. 1. length of his upper arm 2. mass of his upper arm 3. position of the centre of mass of his upper arm relative to the glenohumeral joint 4. radius of gyration of his upper arm...
Wednesday, December 12, 2012 at 7:44am by dmkp

Biomechanics
While pushing off against the starting blocks at the beginning of a race, Olympic swimming great Michael Phelps generates a force that increases linearly from 0 N to 800 N over the first 0.30 s, and then decreases steadily back to 0 N over the remaining 0.30 s (see the graph ...
Sunday, April 6, 2014 at 11:22pm by Brendan

biomechanics
Wb = m*g = 10.1kg * 9.8N/kg = 98.98 N.= Wt. of box. Fb = 98.98N @ 0 Deg. = Force of box. Fp = 98.98*sin(0) = 0 = Force parallel to floor. Fv = 98.98*cos(0) = 98.98 N. = Force perpendicular to floor. u = Coefficient of friction. Fn = Fap - Fp - u*Fv = ma. a = 0. 20.8 - 0 - u*98...
Sunday, May 20, 2012 at 6:33pm by Henry

maths/physics/biomechanics
At the beginning of a race, a yacht crosses the start line and sails in westerly direction at a speed of 4 m s-1. The current of the sea is flowing at 2 m s-1 towards the north-east. Calculate how far [8 marks] and in what direction (relative to west) [8 marks] the yacht has ...
Thursday, February 9, 2012 at 5:12pm by alex

biomechanics
When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum at an angle of 40 degree to the vertical ...
Wednesday, December 12, 2012 at 7:42am by dmkp

Basic Biomechanics
Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, New shoes at $12 per share, and Capital beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S., 30 percent in N, and 10 percent in B & S. With market values ...
Sunday, September 29, 2013 at 10:51am by Walter

Biomechanics
A person with a body mass of 65 kg was running over level ground with a strong tailwind, while wearing a 10 kg weighted vest. The tailwind applied a force of 125 N to the runnerís body in the horizontal direction. Early in the stance phase, the runner generated a vertical ...
Sunday, April 6, 2014 at 11:22pm by Brendan

biomechanics
peter, a 100 kg baketball player, lands on his feet after completeing a slam dunk and then immediately jumps up again to celebrate his basket. when his feet frist touch the floor after the dunk, his velocity is 5 m/s downward, and when his feet leave the floor .50 s later, as ...
Tuesday, March 19, 2013 at 12:22pm by Anonymous

Biomechanics
If the volume of a material is conserved under loading (Volume without force = Volume with force) what is the materialís Poissonís ratio? You can assume that the material is isotropic (it will behave the same in every direction). Hint: take a cube and increase the length in ...
Sunday, October 14, 2012 at 4:22pm by Aaron

biomechanics
a)Describe the structure of the contractile elements of skeletal muscle b)Sketch a graph of teh relationship between developed tension and muscle length and explain the shape of the curve in terms of the interaction between thick and thin myofilaments C) sketch a graph of the ...
Wednesday, November 14, 2012 at 9:12am by dmkp

Biomechanics
velocity is 50-9.8t. v=0 at top of trajectory, at t=50/9.8=5.10 sec. y = yi + 50t - 4.9t^2, so at t=5.10, 20 = yi + 50(5.10) - 4.9(5.10)^2 yi = -107.55 eh? thrown from below ground? Yet it makes sense, since it was thrown upward with a velocity of 50 m.s, yet only made it 20m ...
Tuesday, July 17, 2012 at 10:55pm by Steve

biomechanics
A subject with a height of 165cm and mass of 69 kg is sitting with his lower limb positioned with hip in 90 degree of flexion and knee in full extension and foot in 90 degree of dorsiflexion a) calculate the inter-segment force at the knee joint b)Calculate the net external ...
Wednesday, November 14, 2012 at 9:09am by dmkp

Biomechanics
A juggler performs in a room with a ceiling that is 2.4 m above the level of his hands. He throws a ball (diameter of 10 cm) vertically so that it just reaches the ceiling. what initial velocity does he throw the ball? how long does it take for the ball to reach the ceiling? ...
Monday, May 7, 2012 at 1:59am by Chleo

Biomechanics
Olympic cross country ski champion, Henrik Henrikson, is using a new ski wax, Gripola, that is supposed to stop his ski from slipping backwards when he pushes off against the snow (it gives him a coefficient of static friction between the ski and the snow of 0.20). While ...
Sunday, April 6, 2014 at 11:22pm by Brendan

Biomechanics
XY coordinates of the right toe of a soccer kick performer are Frame 20: (2.62, 0.99) Frame 14: (2,34, 0.16). How far did the toe travel in the upward direction between frames 14 and 20? How fast did the toe travel in upward direction between frames 14 and 20? How fast did the...
Saturday, October 8, 2011 at 2:07pm by Esther

biomechanics
When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum at an angle of 40 degree to the vertical ...
Wednesday, December 12, 2012 at 7:43am by dmkp

Biomechanics
A weightlifter performing a curl with a 320 N barbell stops the lifting motion with his forearms in a horizontal position. (a) If the line of action of the weight of the barbell is 27 cm from the axis of rotation (elbow joint), what is the magnitude of the moment that the ...
Sunday, December 5, 2010 at 8:45pm by jim

Biomechanics
A pitched ball with a mass of 1 kg reaches a catcher's glove traveling at a velocity of 28 m/s. If the ball is in contact with the catcher's glove for 0.5 s during the catch, how much average force is applied by the glove? 56 A pitched ball with a mass of 1 kg reaches a ...
Sunday, November 21, 2010 at 1:39pm by MTV

biomechanics
When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum at an angle of 40 degree to the vertical ...
Wednesday, December 12, 2012 at 7:52am by dmkp

Biomechanics
Describe the human gait cycle. Explain the sinusoidal pattern experienced in normal gait. Using the below data complete the table to determine stride length, stride rate and then calculate velocity. SLOW: The subject took 33 steps of approximately 0.981 m in length. It took 18...
Monday, May 7, 2012 at 2:03am by Chleo

Biomechanics
An 88.9 kg weight lifter is required to perform a snatch movement for their final lift in a weight lifting competition. The standard weight lifting bar is 20 kg and the load attached to the bar was in the form of 6 x 20 kg weight discs, 2 x 10 kg weight discs, 2 x 5 kg weight ...
Monday, May 7, 2012 at 2:06am by Chleo

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