Work done is maximum O a. if force nd displacement are perpendicular O b. if force and displacement make 45° O c. if force and displacement make 60° O d. if force and displacement are in the same direction

Work done is maximum O a. if force nd displacement are perpendicular O b. if force and displacement make 45° O c. if force and displacement make 60° O d. if force and displacement are in the same direction

Name: Work done is maximumO a. if force nd displacement are perpendicularO
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: Work done is maximumO a. if force nd displacement are perpendicularO b. if force and displacement make 45°O c. if force and displacement make 60°O d. if force and displacement are in the samedirection

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Energy Of A System

Section: Chapter Questions

Problem 7.11P: A force F = (6i 2j) N acts on a panicle that under-goes a displacement r = (3i + j) m. Find (a) the...

See similar textbooks

Similar questions

A 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface with K=0.50 . Find the work done over a distance of 10 cm by (a) the horizontal force, (b) the frictional force, and (c) the net force. (d) What is the change in kinetic energy of the box?
A toy cart is pulled a distance of 6.0 m in a straight line across the floor. The force pulling the cart has a magnitude of 20 N and is directed at 37 above the horizontal. What is the work done by this force?
An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow? (b) How much work does the archer do on the string in drawing the bow?
A constant 20-N force pushes a small ball in the direction of the force over a distance of 5.0 m. What is the work done by the force?
How much work does the force do on a particle as it moves from to
Describe a situation in 4iich a force is exerted for a long time but does no work. Explain.
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.Oc below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force? (c) What is the work done on the cart by the shopper? (d) Find the force the shopper exerts, using energy considerations. (e) What is the total work done on the cart?
Give an example of something we think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this is accomplished without doing work.
In the preceding problem, the 10-N force is applied at an angle of 45 below the horizontal. What is the speed of the cart en it has been pushed 8.0 m?
Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.
A sled stalls from rest at the top of a snow-covered incline that makes a 22 angle with the horizontal. After sliding 75 m down the slope, its speed is 14 m/s. Use the work-energy theorem to calculate the coefficient of kinetic friction between the runners of the sled and the snowy surface.
At hokey puck of mass 0.17 kg is shot across a rough floor with the roughness different at different places, which can be described by a position-dependent coefficient of kinetic friction. For a puck moving along the x-axis, the coefficient of kinetic friction is the following function of x, where x is in m: (x)=0.1+0.05x . Find the work done by the kinetic frictional forte on the hockey puck when it h moved (a) from x=0 to x=2 m, and (b) from x=2 m to x=4 m.