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PHYS 1501Q Lecture Notes - Lecture 27: Angular Velocity, Angular Acceleration, International System Of Units

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Verified Note
coralcat765
26 Oct 2018
School
UConn
Department
Physics
Course
PHYS 1501Q
Professor
Soroush Khosravi Dehaghi, Robert McCutcheon

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PHYS 1501Q verified notes
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PHYS 1501Q Lecture 26: PHYS 1501Q - Lecture 26 - Rotational Dynamics and Statics

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PHYS 1501Q Lecture Notes - Lecture 27: Angular Velocity, Angular Acceleration, International System Of Units

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PHYS 1501Q Lecture Notes - Lecture 28: Angular Acceleration, International System Of Units, If And Only If

Document Summary

Physics 1501q - lecture 27 - rotational statics and angular momentum . Key (in si units): t = time (s) x = distance (m) v = velocity (m/s) a = acceleration (m/s 2 ) = change in g = gravity = 9. 81 m/s 2. G = 6. 67 10 11 n m 2 /kg 2 m = mass (kg) U = potential energy (j) w = angular velocity (m/s) General case of a person climbing a ladder: Bill (mass m) is climbing a ladder (length l, mass m) that leans against a smooth wall (no friction between wall and ladder). A frictional force f between the ladder and the floor keeps it from sliding. The angle between the ladder and the wall is f. how does f depend on the angle of the ladder and bill"s distance up the ladder? (source: slide 16 of 10/26 rotational statics lecture https://lms. uconn. edu/bbcswebdav/pid-2594514-dt-content-rid-39579680_1/courses/1188-uco.

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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Related Questions

A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. (a) Explain why the force exerted by the vertical wall on the ladder is horizontal. (b) If the ladder of length L leans at an angle   with the horizontal, what is the lever arm for this horizontal force with the axis of rotation taken at the base of the ladder? (c) If the ladder is uniform, what is the lever arm for the force of gravity acting on the ladder? (d) Let the mass of the painter be 80 kg, L = 4.0 m, the ladder's mass be 30 kg,  and the coefficient of friction between ground and ladder be 0.45. Find the maximum distance the painter can climb un the ladder. 

A uniform stationary ladder of Length L and mass M leans against a smooth vertical wall,while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between the floor and ladder is miu. The ladder makes an angle theta with respect to the floor. A painter of weight 1/2M stands on the ladder a distance d from its base.

a)Find an expression for the magnitude of the normal force  N, exerted by the floor on the ladder

b) Find an expression for the magnitude of the normal force, Nw, exerted by the wall on the ladder

c) Find an expression of the largest value of d-max for which the ladder does not slip

 

 

 

At the instant the displacement of a 2.00 kg object relative to theorigin is d = (2.00 m)i + (4.00 m)j - (3.00 m)k, its velocity is v= (6.99 m/s)i + (3.66 m/s)j + (8.14 m/s)k and it is subject to aforce F = (9.02 N)i - (3.34 N)j + (9.52 N)k. Find the accelerationof the object ((a), (b) and (c) for i, j and k componentsrespectively), the angular momentum of the object about the origin((d), (e) and (f) for i, j and k components respectively), thetorque about the origin acting on the object ((g), (h) and (i) fori, j and k components respectively), and (j) the angle between thevelocity of the object and the force acting on the object.