*81. Go A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls the wagon through the same displacement. They do the same amount of work, but the husband's pulling force is directed 58° above the horizontal, and the wife's pulling force is directed 38° above the horizontal. The hus- band pulls with a force whose magnitude is 67 N. What is the magnitude of the pulling force exerted by his wife?

*81. Go A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls the wagon through the same displacement. They do the same amount of work, but the husband's pulling force is directed 58° above the horizontal, and the wife's pulling force is directed 38° above the horizontal. The hus- band pulls with a force whose magnitude is 67 N. What is the magnitude of the pulling force exerted by his wife?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

* 00 69 T H. K. R. 9. 5. $ V ) G Search or type URL +, MacBook Pro How much work in joules does Martin's pull do in taking his dog for a walk? an angle of 0 =61 degrees with the ground. away, to purchase a Japanese frying pan. Martin's 194 N pull on the handle of the wagon makes Martin puts his beagle in a wagon and takes him to the store, a horizontal distance of 403 m
please help me with this
This is one question with two parts The force required to stretch a Hooke’s-law spring varies from 0N to 32.5N as we stretch the spring by moving one end 7.56 cm from its unstressed position. Find the force constant of the spring Answer in units of N/m Part two: find the work done in stretching the spring answer in units of J
505
#b please
A crate of mass 12.0 kg is pushed up a rough incline with an initial speed of 2.5 m/s the pushing force is 150 N parallel to the incline, which makes an angle of 25° with the horizontal. The coefficient of kinetic friction is 0.4, and the crate is pushed 4.0 m. a) What is the acceleration of the box? b) How much work is done by the frictional force on the crate? c) What is the speed of the crate after being pulled 4.0 m?
How much work is done when you push a crate horizontally with 120 NN across a 11-mm factory floor? Express your answer to two significant figures and include the appropriate units. WW = 1300 JJ If the force of friction on the crate is a steady 70 NN, find the KE gained by the crate. Express your answer to two significant figures and include the appropriate units.
Work to push car up incline
The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this problem is the tension in the cable. A rescue helicopter lifts a 90.5-kg person straight up by means of a cable. The person has an upward acceleration of 0.512 m/s2 and is lifted from rest through a distance of 8.89 m. (a) What is the tension in the cable? How much work is done by (b) the tension in the cable and (c) the person's weight? (d) Use the work-energy theorem and find the final speed of the person.
1. The figure shows three forces applied to a trunk that moves leftward by 2.54m over a frictionless floor. The force magnitudes are F; = 5.08 N, F2= 8.87 N, and Fa3= 3.39 N, and the indicated angle is 0 = 60°. a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? 15
Q30
A lawn mower tractor pulls a large and heavy sled during a pulling game at a county fair. The force during the pull is monitored and recorded by instruments. The figure shows the force as a function of displacement. F (KN) 12 11 10 9 8 7 6 5 4 3 2 1 0 6 7 8 9 10 11 12 x (m) What was the total amount of work done by the tractor? 74.5 kJ 0 1 2 3 4 5 Incorrect. What was the average power of the tractor, if the pull lasted for 7.90 seconds? 9.43 W Incorrect.