![University Physics (14th Edition)](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_largeCoverImage.gif)
A 0.500-kg block, attached to a spring with length 0.60 m and force constant 40.0 N/m. is at rest with the back of the block at point A on a frictionless, horizontal air table (Fig. P7.69). The mass of the spring is negligible. You move the block to the right along the surface by pulling with a constant 20.0-N horizontal force, (a) What is the block’s speed when the back of the block reaches point B. which is 0.25 m to the right of point A? (b) When the back of the block reaches point B. you let go of the block. In the subsequent motion, how close does the block get to the wall where the left end of the spring is attached?
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 7 Solutions
University Physics (14th Edition)
Additional Science Textbook Solutions
Physics for Scientists and Engineers with Modern Physics
Introduction to Electrodynamics
College Physics: A Strategic Approach (4th Edition)
Life in the Universe (4th Edition)
College Physics
University Physics with Modern Physics (14th Edition)
- A block of mass 4.2 kg is sitting on a frictionless ramp with a spring at the bottom that has a spring constant of 405 N/m (refer to the figure). The angle of the ramp with respect to the horizontal is 39°. A: The block, starting from rest, slides down the ramp a distance 45 cm before hitting the spring. How far, in centimeters, is the spring compressed as the block comes to momentary rest? B: After the block comes to rest, the spring pushes the block back up the ramp. How fast, in meters per second, is the block moving right after it comes off the spring? C: What is the change of the gravitational potential energy, in joules, between the original position of the block at the top of the ramp and the position of the block when the spring is fully compressed?arrow_forwardA 325-g model boat facing east floats on a pond. The wind in its sail provides a force of 1.55 N that points 25° north of east. The force on its keel is 0.655 N pointing south. The drag force of the water on the boat is 0.750 N toward the west. If the boat starts from rest and heads east, what is its final speed vf after it travels for a distance of 3.85 m? Uf = m/sarrow_forwardA mass of 0.5 kg moving with a speed of 1.5 m/s on a horizontal smooth surface, collides with a nearly weightless spring of force constant k = 50 N/m. The maximum compression of the spring would be Foooooarrow_forward
- ..arrow_forwardTwo blocks A - 10 Ib, and B- 6 lb. They are resting on the incline, for which the coefficients of static friction are HA = 0.15 and He = 0.25. Determine the angle e Q2 which will cause motion of one of the blocks. What is k-2 ib/ft the friction force under each of the blocks when this occurs? The spring has a stiffness of k = 2 Ib/ft and is originally unstretched.arrow_forwardA box is motionless, sitting on a ramp with an incline of 0 =51.1 ° being pulled in the direction up the ramp by a spring with a spring constant of k=60 N/m that is stretched x=2.8 m. The coefficient of friction between the ramp and the box are u s=0.6 and u k=0.31 and the friction force is going down the ramp. What is the mass of the box? Solve symbolically: Solve numerically: m= Units: If the box starts moving up a ramp with an acceleration of a=1.72 m/s, what is the new length that the spring will stretch? Solve symbolically: Solve numerically: Units:arrow_forward
- A nylon string (modeled as a spring) with original length 20 cm, is pulled by a force of 10 N. The change in length of the string is 2 cm. a) what is the spring constant? b) determine the magnitude of force if the change in length is 6 cm.arrow_forwardA 10N force is applied (pushed down) at a 37 degrees angle onto a Box at rest. The Box then reaches a speed of 30 m/s in 15 seconds along a frictionless surface. What is the mass of the Box in kg?arrow_forwardWhat is the magnitude of the force required to stretch a 10 cm-long spring, with a spring constant of 100 N/m, ?to a length of 15 cm :Select one а. 50N b. 10N С. 150N d. 15N е. 5N أخل اختياري O Oarrow_forward
- Situation 2: The object is dropped onto a spring. A 2.50-kg object is held 185 cm above a relaxed massless vertical spring with a force constant of 520 N/m. 13. How far does it compress the spring? 14. How far does it compress the spring if the same experiment is performed on the Moon, where g=1.63 m/s2? 15. Repeat part (a), but now assume that a constant air-resistance force of 2.650 N acts on the object during its motion. Work and Energyarrow_forwardA desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a rope to a rock of mA = 405 kg and makes his way over the ledge (see the figure below). If the coefficient of static friction between the rock and the ground is H=0.348, and the mass of the hiker is ma= 70.1 kg, what is the maximum mass of the friend, mc, that the rock can hold so the hikers can then make their way up over the ledge? Assume the rope is parallel to the ground and the point where the rope passes over the ledge is frictionless. (ANS: 70.8 kg)arrow_forwardTendons. Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke’s law. In laboratory tests on a particular tendon, it was found that, when a 248-g object was hung from it, the tendon stretched 1.22 cm. (a) Find the force constant of this tendon in N/m. (b) Because of its thickness, the maximum tension this tendon can support without rupturing is 140 N. By how much can the tendon stretch without rupturing, and how much energy is stored in it at that point? Draw free-body diagram.arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781107189638/9781107189638_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337553278/9781337553278_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780321820464/9780321820464_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134609034/9780134609034_smallCoverImage.gif)