HWProblemSet5

HWProblemSet5 - . (b) Are any of the forces applied to m 1...

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Physics 211 Spring 2012 Syracuse University Homework Problem Set 5 p.1 Physics 211 Problem Set 5 Due Friday, 02/24/12 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. A 4 kg object has a velocity of 3m/s along x- direction at t=0s (v i x =3 m/s, v i y =0 m/s). Eight seconds later, its velocity change to v f x =8 m/s, v f y =10 m/s). Assuming the object was subject to a constant total force, find (a) the x- and y- components of force (b) its magnitude 2. Two masses m 1 =2.0 kg, and m 2 =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 m 2 to the right (see below). (a) Draw and label separate free-body diagrams for m 1 and m 2
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Unformatted text preview: . (b) Are any of the forces applied to m 1 equal in magnitude to forces applied to m 2 ? Explain. (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 magnitudes? Block m 1 Block m 2 m 1 T F m 2 Physics 211 Spring 2012 Syracuse University Homework Problem Set 5 p.2 (d) Determine the acceleration of m 1 . (e) Determine the tension in the string. 3. Three blocks (m 1 =2 kg, m 2 =3 kg, m 3 =4 kg) are in contact with each other on a frictionless, horizontal surface as shown below. A horizontal force F=18 N is applied to m 1 . Draw free-body diagrams and mark pairs of forces satisfying 3 rd Newtons Law. (a) find the acceleration of the blocks (b) find the magnitudes of the net forces on each block (c) find the magnitudes of the contact forces between the blocks Block m 1 Block m 2 Block m 3 m 1 m 2 m 3 F...
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HWProblemSet5 - . (b) Are any of the forces applied to m 1...

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