Homework Help is Here – Start Your Trial Now!
Science
Physics
Eddie Hall is the current world record holder in the deadlift, a powerlifting maneuver in which a weighted barbell is lifted rom the ground to waist height, then dropped. The figure below shows a side view of the initial and final positions of the deadlift. 0 = 55.0° Flift h; 22.5 cm b hf = 88.0 cm On March 5, 2016, Hall lifted a combined mass of 465 kg (1,026 lb) from the initial barbell height of 22.5 cm to a height of 38.0 cm above the ground (see figure (b)). As shown in figure (a), the initial lift force for this maneuver is generated by the gluteus maximus parallel to the back of the lifter, at an angle of 55.0° to the vertical. cm/s (a) If the vertical component of the lift force must equal the weight of the barbell, what would have been the net initial lift force (in N) exerted by Eddie Hall to lift the 465 kg barbell? (Enter the magnitude.) N (b) If the duration of the world record lift was 11.0 s, what is the average speed (in cm/s) with which the barbell was lifted? (c) If the barbell was dropped from its final height, with what speed (in m/s) did it impact the ground? m/s (d) What was the total elapsed time (in s) between the initiation of the lift and the instant of the barbell's impact with the ground, if the barbell is dropped immediately after being lifted? (Round your answer to at least one decimal place.) S

Eddie Hall is the current world record holder in the deadlift, a powerlifting maneuver in which a weighted barbell is lifted rom the ground to waist height, then dropped. The figure below shows a side view of the initial and final positions of the deadlift. 0 = 55.0° Flift h; 22.5 cm b hf = 88.0 cm On March 5, 2016, Hall lifted a combined mass of 465 kg (1,026 lb) from the initial barbell height of 22.5 cm to a height of 38.0 cm above the ground (see figure (b)). As shown in figure (a), the initial lift force for this maneuver is generated by the gluteus maximus parallel to the back of the lifter, at an angle of 55.0° to the vertical. cm/s (a) If the vertical component of the lift force must equal the weight of the barbell, what would have been the net initial lift force (in N) exerted by Eddie Hall to lift the 465 kg barbell? (Enter the magnitude.) N (b) If the duration of the world record lift was 11.0 s, what is the average speed (in cm/s) with which the barbell was lifted? (c) If the barbell was dropped from its final height, with what speed (in m/s) did it impact the ground? m/s (d) What was the total elapsed time (in s) between the initiation of the lift and the instant of the barbell's impact with the ground, if the barbell is dropped immediately after being lifted? (Round your answer to at least one decimal place.) S

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
See similar textbooks
icon
Related questions
Topic Video
Question
Eddie Hall is the current world record holder in the deadlift, a powerlifting maneuver in which a weighted barbell is lifted from the ground to waist height, then dropped. The figure below shows a side view of the initial and final positions of the deadlift. a 0 = 55.0° Flift h₂ 22.5 cm b hf = 88.0 cm On March 5, 2016, Hall lifted a combined mass of 465 kg (1,026 lb) from the initial barbell height of 22.5 cm to a height of 88.0 cm above the ground (see figure (b)). As shown in figure (a), the initial lift force for this maneuver is generated by the gluteus maximus parallel to the back of the lifter, at an angle of 55.0° to the vertical. cm/s (a) If the vertical component of the lift force must equal the weight of the barbell, what would have been the net initial lift force (in N) exerted by Eddie Hall to lift the 465 kg barbell? (Enter the magnitude.) N (b) If the duration of the world record lift was 11.0 s, what is the average speed (in cm/s) with which the barbell was lifted? (c) If the barbell was dropped from its final height, with what speed (in m/s) did it impact the ground? m/s (d) What was the total elapsed time (in s) between the initiation of the lift and the instant of the barbell's impact with the ground, if the barbell is dropped immediately after being lifted? (Round your answer to at least one decimal place.) S
Transcribed Image Text:Eddie Hall is the current world record holder in the deadlift, a powerlifting maneuver in which a weighted barbell is lifted from the ground to waist height, then dropped. The figure below shows a side view of the initial and final positions of the deadlift. a 0 = 55.0° Flift h₂ 22.5 cm b hf = 88.0 cm On March 5, 2016, Hall lifted a combined mass of 465 kg (1,026 lb) from the initial barbell height of 22.5 cm to a height of 88.0 cm above the ground (see figure (b)). As shown in figure (a), the initial lift force for this maneuver is generated by the gluteus maximus parallel to the back of the lifter, at an angle of 55.0° to the vertical. cm/s (a) If the vertical component of the lift force must equal the weight of the barbell, what would have been the net initial lift force (in N) exerted by Eddie Hall to lift the 465 kg barbell? (Enter the magnitude.) N (b) If the duration of the world record lift was 11.0 s, what is the average speed (in cm/s) with which the barbell was lifted? (c) If the barbell was dropped from its final height, with what speed (in m/s) did it impact the ground? m/s (d) What was the total elapsed time (in s) between the initiation of the lift and the instant of the barbell's impact with the ground, if the barbell is dropped immediately after being lifted? (Round your answer to at least one decimal place.) S
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 6 steps with 6 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Second law of motion
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON
SEE MORE TEXTBOOKS