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Physics 211 Problem Set 3 Due Friday, 02/22/08 Last Name: First Name Workshop time or section: TA name or Room # Please submit your homework on this sheet. If you need more space than is available, please attach additional sheets of paper. 1. A4kg object has a velocity of 3m/s along x-direction at t=0s (vj x=3 m/s, vj y=0 m/s). Eight seconds later, its velocity change to v,=8 m/s, vp y=10 m/s). Assuming the object was subject to a constant total force, find (a) the x- and »-components of force ay, - @M = Sig + co ye = e V = MA yo HX x (b) its magnitude _ - Pos or 2. & \ Fr (FAR? = SON 2. Two masses m=2.0 kg, and m=3.0 kg situated on a frictionless, horizontal surface are connected by a light (massless) not stretchable string. A force F=4 N is exerted on my to the right (see below). m T my F A N4 (a) Draw and label separate free-hody diagrams for m; and np. fe { Block m | MN Block mm Po | Jeep ei lot T | | W2 | L. b) Are any of tht forces applied to m equal in magnitude to forces applicd to m? y q Explain. ' 4 | T: Newton Heicd Lewd [ 1olir vu (c) Draw vectors to show direction of the acceleration of each mass. Are they in the same or opposite direction? Do they have the same or different magnitudcs? oF .~—————> Somme Oy Qe Physics 211 Spring 2008 Syracuse University Homework Problem Set 5 p.1 
