Big Boris (90kg) skates backward, 1.0 meterahead of small skater Sofia (45 kg) , holding herhand as they travel 3.0 m/At the 30-second mark, Boris starts pullingSofia, so that by time 32.0 s she is 1.0 m aheadof him.During that move, how hard was Sofia pullingBoris?1/3 as hard as Boris pulled Sophia (but backward)half as hard as Boris was pulling her (butbackward)just as hard as Boris was pulling her (butbackward)O 2/3 as hard as Boris pulled Sophia (but backward)3 times as hard as Boris pulled Sophia (butbackward)Boris pulled Sofia - she didn't pull himtwice as hard as Boris was pulling her (butbackward)

we are to determine the reaction on boris in this problem.

Answered: During that move, how hard was Sofia…

Engineering

Mechanical Engineering

During that move, how hard was Sofia pulling Boris?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Friction does not depend on the shape and area of contact of the bodies. Select one: True False
According to the results In Figure 3 of the following If the m = 15 Kg, e = 30° (A-The static coefficient of friction = 0.25 and friction force result=x) and (B- The weight component result=Y), Is the block sliding downward the inclined surface? * O Yes No
List three motions in which the relative angle at a specific joint is significant, and three movements in which the absolute angle of a body segment is significant. Justify your decisions.
please show all work and units and full body diagram. thanks
Find the Normal force if friction force is 444 N and coefficient of friction is 0.37
A force of 347 N is exerted on a box of 5 kg on the floor. If the coefficient of friction is 0.37, calculate the Frictional force.
Part D - Part D Force P is gradually raised until one of the blocks starts slipping. What is the largest value of P that can be applied to pin C of the linkage before any slipping occurs? Express your answer in units of N to three significant figures and include the appropriate units. Ηνα ΑΣφ vec P = Submit Request Answer Part E - Part E When slipping is about to occur what is the friction force on Block A, otherwise known as F? Express your answer in units of N to three significant figures and include the appropriate units. TVO| AEO n vec FA = N Submit Request Answer Part F - Part E When slipping is about to occur what is the normal force on Block A, otherwise known as N,? Express your answer in units of N to three significant figures and include the appropriate units. ν ΑΣφ vec NA = N Submit Request Answer
7.5 ft- 15 ft Smooth wall 9 ft
What If? If the incline under m2 is rough, what is the minimum value of the coefficient of static friction ?s for which the system will not move? ?s =
The mass of block A in Figure 5 is 60 kg. The coefficient of friction between the thread and the mating groove is 0.2 and that between all other rubbing surfaces is 0.4. The pitch of the thread on the shaft is 5 mm. Take the mean radius of the screw to be 15 mm. a. Sketch free body diagrams for the block and the wedge. b. Neglecting the weight of the wedge, determine the force that must applied to raise the block with the wedge. c. Sketch a free body diagram that can be used to determine a relation between the force that can turn the screw, and the minimum force that the screw must exert on the wedge in order to raise block A. d. Using your free body diagram from (c), derive a relation between the force that can turns the screw to push the wedge, and the force the screw exerts on the wedge in order to raise block A. e. Determine the minimum couple that must turn the screw in order to raise block A using the relation you obtained from (d)
a. Compare the size of the force placed on your bicep muscle to the force of the 20 lb dumbbell lifted by your hand. Using the concept of torque, which force is greater and explain why the two forces are not identical. b. Does the force placed on your bicep muscle change as you curl the weight closer toward your body? (In other words, is the force on your muscle different when your forearm is 90° to your upper arm than when it is 45° to your upper arm?) Explain your answer using torque.
Using the coefficients of static friction indicated, determine the largest vertical force PP which can be applied to the cord without causing motion. Express your answer to three significant figures and include the appropriate units.