PHYS171_f11_lecture_11

# PHYS171_f11_lecture_11 - PHYS171 Principles of Physics I...

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PHYS171 Principles of Physics I Prof. Arthur La Porta Assistant Professor, Department of Physics, Institute of Physical Science and Technology Maryland Biophysics Program [email protected] Rm 1111, IPST building (building #085) Chapter 4 Hanging a lamp You are hanging a lamp but are concerned that it is too heavy for the hooks you have available. You decide to suspend the lamp from two hooks, as shown below. How does the force on the hooks compare to what it would have been with a single hook. θ T 1 T 2 T 2

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Chapter 4 Mass Rests on an inclined plane Find motion of the block assuming block slides freely on the surface ( θ =20 degrees) m θ Chapter 4 How would we use the track to confirm Newton’s laws of motion: 1. An object in motion remains in motion unless acted upon by an outside force. An object at rest remains at rest unless acted upon by an outside force. 2. Acceleration is directly proportional to net force and inversely proportional to mass. 3. When a object exerts a force on a second object, the second
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## This note was uploaded on 12/29/2011 for the course PHYSICS 171 taught by Professor La porta during the Fall '11 term at Maryland.

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PHYS171_f11_lecture_11 - PHYS171 Principles of Physics I...

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