Concept explainers
Additional Integrated Problems
A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is transformed into elastic potential energy of the bending board; if the board bends far enough, it breaks. Applying a force to the center of a particular pine board deflects the center of the board by a distance that increases in proportion to the force. Ultimately the board breaks at an applied force of 800 N and a deflection of 1.2 cm.
a. To break the board with a blow from the hand, how fast must the hand be moving? Use 0.50 kg for the mass of the hand.
b. If the hand is moving this fast and comes to rest in a distance of 1.2 cm, what is the average force on the hand?
Want to see the full answer?
Check out a sample textbook solutionChapter P Solutions
College Physics: A Strategic Approach (4th Edition)
Additional Science Textbook Solutions
College Physics
Essential University Physics (3rd Edition)
University Physics Volume 1
College Physics
College Physics (10th Edition)
Conceptual Physical Science (6th Edition)
- I have only 20 minutes. Please solve fastarrow_forwardProblem 3 A 0.05kg basketball is thrown 3.05 meters into the air at a hoop. It rolls around the rim and then falls to the ground. A. What is the initial potential energy of the ball when it's on the rim? B. What is its final kinetic energy? speaker notes C. What is the velocity of the ball before it hits the ground? LET'Sarrow_forwardSolve question 10arrow_forward
- Need help with engineering dynamic review Can you please make your work step by step clear so its easy to understand Draw a free body diagram of the disk. Indicate which forces and/or couples do work on the disk. Part B Determine the value of the moment M for the disk to stop after rolling down a distance d = 5 ft down the incline. You must use the work-energy theorem to solve this question.arrow_forwardPart A Scallops use muscles to close their shells. Opening the shell is another story--muscles can only pull, they can't push. Instead of muscles, the shell is opened by a spring, a pad of a very elastic biological material called abductin. When the shell closes, the pad compresses; a restoring force then pushes the shell back open. The energy to How much elastic potential energy is stored? Express your answer with the appropriate units. open the shell comes from the elastic energy that was stored when the shell was closed. (Figure 1) shows HA ? smoothed data for the restoring force of an abductin pad versus the compression. When the shell closes, the pad compresses by 0.15 mm. U; = Value Units Submit Request Answer Provide Feedback Figure 1 of 1 Restoring force (N) 2.5 - 2.0 1.5 1.0 0.5 0.05 0.10 0.15 0.20 Compression (mm) Pearsonarrow_forwardACTIVITY 3 Problem Solving Gravitational Potential Energy and Elastic Potential Energy Energy is the ability to produce changes in matter. It has two states, the kinetic energy and potential energy. Kinetics energy has 3 forms, vibrational, rotational, and translational, While potential energy has 3 types, gravitational, chemical, and elastic potential energy. Gravitational PE is the energy stored because of its height and elastic PE is the energy stored in elastic materials as the result of their stretching or compressing. nga Read, analyze, and solve the following problems using the GUFSA template. Show your complete solution. Round off your final answer to the nearest hundredths. A. GPE woH 1. How much G.P.E. does a 100 kg boulder that is 75m above the ground has?arrow_forward
- A 3.00 kg block rests on a horizontal frictionless table a pendulum is built with a string and a second block with mass of 1.00 kg and arranged so that when the pendulum string is vertical this block just touches the table. The pendulum block is pulled back until it is at a h= 55.0 cm when released the block depends and collides with the block on the table with an elastic collision using conservation of movement and relative velocity equations to develop your equations to how fast in(m/s) the block on the table moves after collisionarrow_forwardMatch the concept with the formula Force Momentum Kinetic Energy Angular momentum A. MV B. 1/2 M V2 C. Iω D. MAarrow_forwardA juggler juggles three balls in a continuous cycle. Any one ball is in contact with one of his hands for one fifth of the time. (a) Describe the motion of the center of mass of the three balls. (b) What average force does the juggler exert on one ball while he is touching it?arrow_forward
- An open box slides across a frictionless, icy surface of a frozen lake. What happens to the speed of the box as water from a rain shower falls vertically downward into the box? Explain.arrow_forwardA flea is able to jump about 0.5 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100-story building! When an animal jumps, it converts work done in contracting muscles into gravitational potential energy (with some steps in between). The maximum force exerted by a muscle is proportional to its cross-sectional area, and the work done by the muscle is this force times the length of contraction. If we magnified a flea by a factor of 1 000, the cross section of its muscle would increase by 1 0002 and the length of contraction would increase by 1 000. How high would this superflea be able to jump? (Dont forget that the mass of the superflea" increases as well.)arrow_forwardarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning