Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 7, Problem 41P
To determine
To Find:The amount by which the center of the net drops as the person comes to rest.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You and your friend Peter are putting new shingles on a roof pitched at 23 ∘ . You're sitting on the very top of the roof when Peter, who is on the edge of the roof, 5.2 m away, asks you for the box of nails. Rather than carry the 2.3 kg box of nails down to Peter, you decide to give the box a push and have it slide down to him.
If the coefficient of kinetic friction between the box and the roof is 0.52, with what speed should you push the box to have it gently come to rest right at the edge of the roof?
A man of weight W is on the top of a symmetric two-legged ladder, which is standing on a horizontal surface, as it is shown in the figure. The length of the ladder is L. There is a chain of length a, attached between the bottom third points of the legs, which prevents the collapse of the ladder.
(a) Determine the tension T in the chain assuming that the floor is very slippery.
(b) Determine the minimal static friction coefficient forwhich the ladder does not collapse even without thechain.
In both cases calculate with symbols, and give the numerical result for L = 5 m, W = 800 N, a = 1.5 m.
A uniform density sheet of metal is cut into the shape of an isosceles triangle, which is oriented with the base at the bottom and a corner at the top. It has a base B = 13 cm, height H = 19 cm, and area mass density σ.
e) Set up an integral to calculate the vertical center of mass of the triangle, assuming it will have the form C ∫ f(y) where C has all the constants in it and f(y) is a function of y. What is f(y)?
f)Integrate to find an equation for the location of the center of mass in the vertical direction. Use the coordinate system specified in the previous parts, with the origin at the top and positive downward.
g) Find the numeric value for the distance between the top of the triangle and the center of mass in cm.
Chapter 7 Solutions
Physics Fundamentals
Ch. 7 - Prob. 1QCh. 7 - Prob. 2QCh. 7 - Prob. 3QCh. 7 - Prob. 4QCh. 7 - Prob. 5QCh. 7 - Prob. 6QCh. 7 - Prob. 7QCh. 7 - Prob. 8QCh. 7 - Prob. 9QCh. 7 - Prob. 10Q
Ch. 7 - Prob. 11QCh. 7 - Prob. 12QCh. 7 - Prob. 13QCh. 7 - Prob. 14QCh. 7 - Prob. 15QCh. 7 - Prob. 16QCh. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10PCh. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57PCh. 7 - Prob. 58PCh. 7 - Prob. 59PCh. 7 - Prob. 60PCh. 7 - Prob. 61PCh. 7 - Prob. 62PCh. 7 - Prob. 63PCh. 7 - Prob. 64PCh. 7 - Prob. 65PCh. 7 - Prob. 66PCh. 7 - Prob. 67PCh. 7 - Prob. 68PCh. 7 - Prob. 69PCh. 7 - Prob. 70PCh. 7 - Prob. 71PCh. 7 - Prob. 72P
Knowledge Booster
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
- A scale stretches 7 cm for a 7 kg load. How far apart are the 0.5 kg marks on it to the nearest mm?arrow_forwardA block with a mass of 0.350kg is placed on a rough planar surface that is inclined 30° above the horizontal. The maximal coefficient of static friction 0.25 and the coefficient of kinetic friction is 0.12. If the block is released from rest, what acceleration does it experience?arrow_forwardIn the figure a 50 kg rock climber is in a lie-back climb along a fissure, with hands pulling on one side of the fissure and feet pressed against the opposite side. The fissure has width w = 0.20 m, and the center of mass of the climber is a horizontal distance d = 0.45 m from the fissure. The coefficient of static friction between hands and rock is μ1 = 0.50, and between boots and rock it is μ2 = 1.15. The climber adjusts the vertical distance h between hands and feet until the (identical) pull by the hands and push by the feet is the least that keeps him from slipping down the fissure. (He is on the verge of sliding.) (a) What is the least horizontal pull by the hands and push by the feet that will keep the climber stable? (b) What is the value of h?arrow_forward
- A 85-kg man starts climbing a ladder that leans against a wall as shown in the diagram. If the ladder is 5 m long and weighs 10 kg, determine the normal reaction at the horizontal surface (in N) if the coefficient of friction is 0.25 at the top vertical surface and 0.4 at the bottom horizontal surface.arrow_forwardTwo objects slide on a smooth surface, they collide and stick together. There is no external force acting on them. After the collision, the two objects move together. The final kinetic energy is a) greater than the initial kinetic energy b) less than the initial kinetic energy c) equal to the initial kinetic energyarrow_forwardA block of wood with mass, 1.20 kg, is held stationary by your friend near the top of a ramp such that it is 1 m above the foor. The sloping surface of the ramp makes a 12 degree angle with the foor. If the coeffcient of kinetic friction for the block-ramp interface is 0.100, how long will it take the block to reach the foor after your friend releases it?arrow_forward
- A child shoves a 4.6 kg block so that it starts traveling across a level floor with an initial velocity of 3.6 m/s. If the coefficient of kinetic friction between the block and the floor is 0.29, how far will it travel before coming to rest?arrow_forwardParker is a 56 kg pole vaulter and after successfully completing a vault, her center of mass achieves a maximum peak of height of 4.6 meters after pole-vaulting over the crossbar set at that height. She lands on a thick crash pad and when she first makes contact with the mat, her center of mass is 0.9 meters above the ground. During her impact with the mat, the mat undergoes a maximum compression at the point when her vertical velocity reaches 0 m/s and her center of mass is 0.3 meters from the ground. d) What is the work done by the crash mat on Parker during the landing in Joules to allow Parker to come to a complete stop? e) What is the magnitude of the average force in Newtons exerted by the mat on Parker to allow her to come to a stop during the landing of the vault?arrow_forwardParker is a 56 kg pole vaulter and after successfully completing a vault, her center of mass achieves a maximum peak of height of 4.6 meters after pole-vaulting over the crossbar set at that height. She lands on a thick crash pad and when she first makes contact with the mat, her center of mass is 0.9 meters above the ground. During her impact with the mat, the mat undergoes a maximum compression at the point when her vertical velocity reaches 0 m/s and her center of mass is 0.3 meters from the ground. a) What is Parker’s maximum potential energy during the vault? b) What is Parker’s maximum kinetic energy during the landing phase of the vault? c) What is Parker’s maximum speed in m/s during the landing phase of the vault? d) What is the work done by the crash mat on Parker during the landing in Joules to allow Parker to come to a complete stop? e) What is the magnitude of the average force in Newtons exerted by the mat on Parker to allow her to come to a stop during the landing of the…arrow_forward
- a baseball catcher puts on an exhibition by catching a 0.15 kg ball, dropped from a helicopter at a height of 100m above the catcher. If the catcher "gives" with the ball for 0.75 m (was originally 1m off the ground) while catching it, what is the average force exerted on the mitt by the ball?arrow_forwardFour bricks of length L, identical and uniform, are stacked on top of one another in such a way that part of each extends beyond the one beneath. Find, in terms of L, the maximum values of (a) a1, (b) a2, (c) a3, (d) a4, and (e) h, such that the stack is in equilibrium, on the verge of falling.arrow_forwardReview. The mass of a car is 1 500 kg. The shape of the cars body is such that its aerodynamic drag coefficient is D = 0.330 and its frontal area is 2.50 m2. Assuming the drag force is proportional to 2 and ignoring other sources of friction, calculate the power required to maintain a speed of 100 km/h as the car climbs a long hill sloping at 3.20.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Conservative and Non Conservative Forces; Author: AK LECTURES;https://www.youtube.com/watch?v=vFVCluvSrFc;License: Standard YouTube License, CC-BY