Question

Three spiders are resting on the vertices of a triangular web. The sides of the triangular web have a length of a 0.52 m, as depicted in the figure. Two of the spiders (S1 and 53) have +4.6 UC charge, while the other (S2) has -4.6 C charge. (a) What are the magnitude and direction of the net force on the third spider (Sz)? magnitude direction counterclockwise from the +x-axis (b) Suppose the third spider (Sa) moves to the origin. Would the net force on the third spider (S3) be greater than, less than, or equal to the magnitude found in part (a)? greater than in part (a) less than in part (a) equal to the part (a) (c) What are the magnitude and direction of the net force on the third spider (S3) when it is resting at the origin? magnitude direction counterclockwise from the +x-axis

Answer 1

vers R270° I cooo © 12 Y Esino + tsino Now, F & F are the forces on se due to sr. Now we resolue fonces along x-y axes F = El = 1 1916L (magnitude) similarly z 15 l = 19211931 ETG az o lailla/= 193) Fish re magnitude of two fences F&F are equal. Now, Net fonce on & direction, fx = Flor o flo80

and net ferice alongy - fy = -(tising the sind) (along-reyasix) = - 2 Asino > Fy = - 2x+ fille avez = n! Hilla - 40G az 4560 az op Fys - gx109 x 4.6X46X60V2 M (152) » Fy= -70N in Magnitude of het fonce on Sg F = V Fight Fy2 = 0.7N (fx=0 direction is in ay axis ( 0 = 2700) we I moves to omgin ofcourse the force on would be greater o ao there is no cancellation of any components of forces but they simply add up. > greater

North clearly the net fence on his along -yaxin with magnitude, (te Exzo) fy= -(6 + --257 Cateng-Y) = fonce on Ez duents of y the Hills (alk z 4x Enclailed to az = 4X0.71 2.8 N Net F fonce on Sz I Fy? thy 2 & 1 Fyl = 247 F25.6 N I direction along -yaxis le 02 270°