Recitation_09

Recitation_09 - Recitation 9 – 1/17 Phys 218 Physics...

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Unformatted text preview: Recitation 9 – 1/17 Phys 218 Physics Topics • Kinematics • Forces • Work • Conservation of Energy • Conservation of Momentum • Torque Recitation 9 – 2/17 Phys 218 Physics Topics Linear Motion x v a m F = m a p = m v KE = (1/2) m v 2 Rotational Motion θ ω α I τ = I α Recitation 9 – 3/17 Phys 218 Example 1 A person is holding a flag pole. The flag pole’s mass is uniformly distributed. The flag pole has a mass of 10 kg and its length is 1.8 m. The person is holding the tube at a 60° angle above the horizontal. What is the torque on the flag pole due to gravity? τ = ___________ 44.1 Nm Recitation 9 – 4/17 Phys 218 Example 2 A 15 kg beam with a length of 18 m is sitting on two supports. The first support is located 2 m from the left edge, and the second support is located 4 m from the right edge. A 10 kg crate is also placed on the beam a distance of 0.5 m from the left edge. What are the normal forces provided by each of the two supports? Recitation 9 – 5/17 Phys 218 Example 2 A 15 kg beam with a length of 18 m is sitting on two supports. The first support is located 2 m from the left edge, and the second support is located 4 m from the right edge. A 10 kg crate is also placed on the beam a distance of 0.5 m from the left edge. What are the normal forces provided by each of the two supports? crate on g F 2 N 1 N 18 m 0.5 m 2 m 4 m Recitation 9 – 6/17 Phys 218 Example 2 A 15 kg beam with a length of 18 m is sitting on two supports....
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This note was uploaded on 12/07/2011 for the course PHYS 218 taught by Professor A during the Fall '08 term at Purdue.

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Recitation_09 - Recitation 9 – 1/17 Phys 218 Physics...

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