PHYSICS FOR SCI.AND ENGR W/WEBASSIGN
10th Edition
ISBN: 9781337888462
Author: SERWAY
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 16P
Review. A student, along with her backpack on the floor next to her, is in an elevator that is accelerating upward with acceleration a. The student gives her backpack a quick kick at t = 0, imparting to it speed v and causing it to slide across the elevator floor. At time t, the backpack hits the opposite wall a distance L away from the student. Find the coefficient of kinetic friction μk between the backpack and the elevator floor.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A person pushes a box of mass m= 25 kg in a straight line along a rough floor. The applied force F has
magnitude 85 N and acts downward at an angle 0 = 10° with respect to the horizontal, as shown below.
The box is initially at rest at the position x, = 0 m, and it has speed v2 = 0.55 m/s at position x2= 3.50 m.
a). Find the coefficient of friction between the box and the floor.
b). What is the net work done?
c). How much work (magnitude and sign) is done by the friction force?
(This problem involves constant acceleration, Newton's Laws, and work!)
m
2 crates are connected to each other by a rope. One crate(m=17kg) is sitting by the ledge of a cliff, and has a coefficient of friction between itself and the ground of 0.21. The second crate(m=11kg) is hanging off the edge of the cliff. Assuming that the hanging crate is heavy enough to pull the crate by the ledge to the right.
Find a) and b) and Draw FBD for each crate
a) The acceleration of the system
b) The tension force that connects 2 crates together
You and your friend Peter are putting new shingles on
a roof pitched at 24°. 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 2.0 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 0.50, with what speed should you push the box to have it gently
come to rest right at the edge of the roof?
Chapter 6 Solutions
PHYSICS FOR SCI.AND ENGR W/WEBASSIGN
Ch. 6.1 - You are riding on a Ferris wheel that is rotating...Ch. 6.2 - A bead slides at constant speed along a curved...Ch. 6.3 - Consider the passenger in the car making a left...Ch. 6.4 - A basketball and a 2-inch-diameter steel ball,...Ch. 6 - In the Bohr model of the hydrogen atom, an...Ch. 6 - Whenever two Apollo astronauts were on the surface...Ch. 6 - A car initially traveling eastward turns north by...Ch. 6 - A curve in a road forms part of a horizontal...Ch. 6 - In a cyclotron (one type of particle accelerator),...Ch. 6 - Why is the following situation impossible? The...
Ch. 6 - You are working during your summer break as an...Ch. 6 - A driver is suing the state highway department...Ch. 6 - A hawk flies in a horizontal arc of radius 12.0 m...Ch. 6 - A 40.0-kg child swings in a swing supported by two...Ch. 6 - A child of mass m swings in a swing supported by...Ch. 6 - One end of a cord is fixed and a small 0.500-kg...Ch. 6 - A roller coaster at the Six Flags Great America...Ch. 6 - An object of mass m = 5.00 kg, attached to a...Ch. 6 - A person stands on a scale in an elevator. As the...Ch. 6 - Review. A student, along with her backpack on the...Ch. 6 - A small container of water is placed on a...Ch. 6 - The mass of a sports car is 1 200 kg. The shape of...Ch. 6 - Review. A window washer pulls a rubber squeegee...Ch. 6 - A small piece of Styrofoam packing material is...Ch. 6 - Prob. 21PCh. 6 - Assume the resistive force acting on a speed...Ch. 6 - You can feel a force of air drag on your hand if...Ch. 6 - A car travels clockwise at constant speed around a...Ch. 6 - A string under a tension of 50.0 N is used to...Ch. 6 - Disturbed by speeding cars outside his workplace,...Ch. 6 - A car of mass m passes over a hump in a road that...Ch. 6 - A childs toy consists of a small wedge that has an...Ch. 6 - A seaplane of total mass m lands on a lake with...Ch. 6 - An object of mass m1 = 4.00 kg is tied to an...Ch. 6 - A ball of mass m = 0.275 kg swings in a vertical...Ch. 6 - Why is the following situation impossible? A...Ch. 6 - The pilot of an airplane executes a loop-the-loop...Ch. 6 - A basin surrounding a drain has the shape of a...Ch. 6 - Review. While learning to drive, you arc in a 1...Ch. 6 - A truck is moving with constant acceleration a up...Ch. 6 - Because the Earth rotates about its axis, a point...Ch. 6 - A puck of mass m1 is tied to a string and allowed...Ch. 6 - Galileo thought about whether acceleration should...Ch. 6 - Members of a skydiving club were given the...Ch. 6 - A car rounds a banked curve as discussed in...Ch. 6 - In Example 6.5, we investigated the forces a child...Ch. 6 - Review. A piece of putty is initially located at...Ch. 6 - A model airplane of mass 0.750 kg flies with a...Ch. 6 - A 9.00-kg object starting from rest falls through...Ch. 6 - For t 0, an object of mass m experiences no force...Ch. 6 - A golfer tees off from a location precisely at i =...Ch. 6 - A single bead can slide with negligible friction...Ch. 6 - Because of the Earths rotation, a plumb bob does...Ch. 6 - You have a great job working at a major league...
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
- You and your friend Peter are putting new shingles on a roof pitched at 21°. You're sitting on the very top of the roof when Peter, who is on the edge of the roof, 5.5 m away, asks you for the box of nails. Rather than carry the 2.5 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 0.54, with what speed should you push the box to have it gently come to rest right at the edge of the roof? Express your answer with the appropriate units. ► View Available Hint(s) v = μA Value Submit Units ?arrow_forwardYou and your friend Peter are putting new shingles on a roof pitched at 25°. You’re sitting at the very top of the roof when Peter, who is on the end of the roof, 5.2 m away, asks you for the box of nails. Rather than carry 2.2 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 0.55, with what speed should you push the box to have it gently come to rest right at the edge of the roof?arrow_forward2 crates are connected to each other by a rope. One crate(m=17kg) is sitting by the ledge of a cliff, and has a coefficient of friction between itself and the ground of 0.21. The second crate(m=11kg) is hanging off the edge of the cliff. Assuming that the hanging crate is heavy enough to pull the crate by the ledge to the right. Find a) and b) and Draw FBD for each crate T-E1. a) The acceleration of the system b) The tension force that connects 2 crates together Paragraph Iarrow_forward
- A block of mass m is sitting on a block of mass M. The bottom block is sitting on a horizontal floor. The coefficient of static friction between the blocks is μs1, and the coefficient of static friction between the bottom block and the floor is μs2. What is the minimum pull force F on the bottom block so that the blocks begin to move? Given that the coefficient of kinetic friction between the bottom block and the floor is μk, what is the maximum pull force F so that there is no slipping between the blocks?arrow_forwardA waitress shoves a ketchup bottle with mass 0.45 kg to her right along a smooth, level lunch counter. The bottle leaves her hand moving at 2.8 m/s, then slows down as it slides because of a constant horizontal friction force exerted on it by the countertop. It slides for 1.0 m before coming to rest. What is the magnitude of the friction force acting on the bottle?arrow_forwardA block M1 of mass 10.0 kg sits on top of a larger block M2 of mass 20.0 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.440. The kinetic friction coefficient between the lower block and the flat surface is 0.140. A horizontal force F= 97 N pushes against the upper block, causing it to slide. The friction force between the blocks then causes the lower block to slide also. What is the magnitude of the acceleration of the upper block? What is the magnitude of the acceleration of the lower block?arrow_forward
- block 1 of mass m1 2.0 kg and block 2 of mass m2 3.0 kg are connected by a string of negligible mass and are initially held in place. Block 2 is on a frictionless surface tilted at u = 30. The coefficient of kinetic friction between block 1 and the horizontal surface is 0.25. The pulley has negligible mass and friction. Once they are released, the blocks move.What then is the tension in the string?arrow_forwardOn a winter day a child of mass 20.0 kg slides on a horizontal sidewalk covered in ice. Initially she is moving at 3.00 m/s, but due to friction she comes to a halt in 2.25 m. What is the magnitude of the constant friction force that acts on her as she slides?arrow_forwardA student stands in an elevator that is continuously accelerating upward with acceleration a. Her backpack is sitting on the floor next to the wall. The width of the elevator car is L. The student gives her backpack a quick kick at t = 0, imparting to it speed v and making it slide across the elevator floor. At time t, the backpack hits the opposite wall. Find the coefficient of kinetic friction mk between the backpack and the elevator floor.arrow_forward
- A block M₁ of mass 10.5 kg sits on top of a larger block M₂ of mass 20.5 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.415. The kinetic friction coefficient between the lower block and the flat surface is 0.115. A horizontal force F = 91 N pushes against the upper block, causing it to slide. The friction force between the blocks then causes the lower block to slide also. F M1 M2 Find the magnitude of the acceleration of the upper block. m/s^2 Find the magnitude of the acceleration of the lower block. m/s^2arrow_forwardA large box of mass M is moving on a horizontal floor at speed v0. A small box of mass m is sitting on top of the large box. The coefficient of static friction between the two boxes is μs and coefficient of kinetic friction between the large box and floor is μk. Find an expression for the shortest distance dmin in which the large box can stop without the small box slipping.arrow_forwardA transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700 kg, and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 4300 N. The tension in the towrope between the transport plane and the first glider is not to exceed 12000 N. If a speed of 40 m/s is required for takeoff, what minimum length of runway is needed?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Gravitational Force (Physics Animation); Author: EarthPen;https://www.youtube.com/watch?v=pxp1Z91S5uQ;License: Standard YouTube License, CC-BY