Calculate the height of the center of mass above its starting height during a squat jump...
Calculate the height of the center of mass above its starting height during a squat jump based on the following information: BW = 777 N, total vertical force = 899 N, and time of force application = 0.93 seconds. The answer is 0.10 m, just not sure how to get there. Thank you in advance.
Homework Answers
net upward force = 899 - 777 = 122 N
impulse = 122 x 0.93 = 113.46 Ns
mv = 113.46 Ns => v = 113.46/(777/9.8) = 1.431
now h = v2/2g = (1.431)2/19.6 = 0.10448 m
Add Answer to:
Calculate the height of the center of mass above its starting
height during a squat jump...
Calculate the velocity of the center of mass of the body just after a vertical squat...
Calculate the velocity of the center of mass of the body just after a vertical squat jump given that body weight = 777 N, force applied vertical = 900 N, and time of force application - 0.5 sec Then indicate which formula you might use to calculate the height of the center of mass at the peak of the jump. OA 4.68 m/s, the formula to find COM height is P*tumv *5.68 m/s, the formula to find COM height is...
A high jumper (mass=70 kg) is competing in an Olympic event. The height she was trying...
A high jumper (mass=70 kg) is competing in an Olympic event. The height she was trying to clear was when her CoG was 2.05 m above the ground (CoG was 1 m above ground at takeoff). While making the jump, the jumper’s foot was in contact with the ground for 0.22s during the upward phase of the jump. a. How much change in potential energy must the jumper have to just clear the bar? (1 pt) b. What is the...
1. A firework (small rocket) whose shell has a mass of m 12kg was initially on the ground before being launched to a height of 100m above the ground at which point its horizontal displacement from it...
1. A firework (small rocket) whose shell has a mass of m 12kg was initially on the ground before being launched to a height of 100m above the ground at which point its horizontal displacement from its starting position is 17.6m. At this location its speed is 68m/s and it's at an angle relative to (and above) the horizontal of 80 as depicted in the diagram below. Once it reaches this height it goes off and its shell splits into...
A uniform rod of mass 5 kg and length 1.5 m is pivoted about its center....
A uniform rod of mass 5 kg and length 1.5 m is pivoted about its center. The rod is struck at one end with a hammer; during the blow an average force of 1000 N acts for 0.01 seconds. What is the angular velocity of the rod just after the impact, if the rod was initially at rest? Use Irod = (1/12)ML2.
Ionsider the ski jump track shown in Figure 2 below. The radius of curvature of the...
Ionsider the ski jump track shown in Figure 2 below. The radius of curvature of the track is r= 60 [m] and the ski jumper's mass is 65 [kg]. The ski jumper's angular displacement, 6 is defined from the horizontal as shown. The ski jumper goes along the ski jump track for 6 = 120° before launching at an angle B = 30° above the horizontal. r=60[m] 0 0=120° LAUNCH POINT ski jumper B -GROUND Figure 2: Ski jumper attempting...
39. (4 pts) A 500-g mass drops from a height of 10.0 meters. What is its...
39. (4 pts) A 500-g mass drops from a height of 10.0 meters. What is its speed just before it hits the ground? 40. (4 pts) A flight attendant pulls a wheeled suitcase, applying a 66-N force at a 35° angle to the horizontal. How much work does she do in pulling the suitcase 45 m? 41. (4 pts) A 1525-kg car drives up a mountain road a vertical rise of 1301 m from the base elevation in 30. min...
I need help with the last three questions the Loop A mass m -82 kg slides...
I need help with the last three questions
the Loop A mass m -82 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R 7.8 m and finally a flat straight section at the same height as the center of the loop (17.8 m off the ground). Since the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it...
In 2014, Damian Walters demonstrated that he could run through a vertical loop (after a lot...
In 2014, Damian Walters demonstrated that he could run through a vertical loop (after a lot of failed attempts). What minimum running speed did he need to do it? Assume the loop has a radius of 1.96 m, that Damian's mass is 76.5 kg, that he stays in contact with the loop at all times, and (unrealistically) that you can neglect friction and drag forces. Also, keep in mind that it's Damian's center of mass that matters, which is approximately...
1. A pole is held vertically by attaching wires at a height of 13.4 m above...
1. A pole is held vertically by attaching wires at a height of 13.4 m above the ground. The other end of each wire is anchored in the ground at a distance of 9.54 m from the base of the pole. The pole makes a right angle with the ground. What is the length of each wire? 2. A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bug's direction of travel changes from...
Reuben Rubino is a Tax Professional working during the Emerald Advance offer period before tax season...
Reuben Rubino is a Tax Professional working during the Emerald Advance offer period before tax season starts. He has taken and passed the financial product compliance course. He wants to apply for an Emerald Advance. What should he do? Reuben can complete his own product application. Reuben needs to have another associate complete his application because self-preparation of product applications is prohibited. Reuben is ineligible to apply for H&R Block Emerald Advance. None of the above. If you observe suspicious...
Calculate the velocity of the center of mass of the body just after a vertical squat jump given that body weight = 777 N, force applied vertical = 900 N, and time of force application - 0.5 sec Then indicate which formula you might use to calculate the height of the center of mass at the peak of the jump. OA 4.68 m/s, the formula to find COM height is P*tumv *5.68 m/s, the formula to find COM height is...
1. A firework (small rocket) whose shell has a mass of m 12kg was initially on the ground before being launched to a height of 100m above the ground at which point its horizontal displacement from its starting position is 17.6m. At this location its speed is 68m/s and it's at an angle relative to (and above) the horizontal of 80 as depicted in the diagram below. Once it reaches this height it goes off and its shell splits into...
Ionsider the ski jump track shown in Figure 2 below. The radius of curvature of the track is r= 60 [m] and the ski jumper's mass is 65 [kg]. The ski jumper's angular displacement, 6 is defined from the horizontal as shown. The ski jumper goes along the ski jump track for 6 = 120° before launching at an angle B = 30° above the horizontal. r=60[m] 0 0=120° LAUNCH POINT ski jumper B -GROUND Figure 2: Ski jumper attempting...
39. (4 pts) A 500-g mass drops from a height of 10.0 meters. What is its speed just before it hits the ground? 40. (4 pts) A flight attendant pulls a wheeled suitcase, applying a 66-N force at a 35° angle to the horizontal. How much work does she do in pulling the suitcase 45 m? 41. (4 pts) A 1525-kg car drives up a mountain road a vertical rise of 1301 m from the base elevation in 30. min...
I need help with the last three questions
the Loop A mass m -82 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R 7.8 m and finally a flat straight section at the same height as the center of the loop (17.8 m off the ground). Since the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago