7. 2) The lawn roller has a mass m = 60 kg and a radius of gyration about its gravitational center G, kG = 191 mm. It has a handle that connects to its center axle, and the handle is pushed forward with a force F= 437 N at a 45° angle. The coefficients of static and kinetic friction between the roller and the ground are us = 0.11 and uk = 0.07, respectively. For the sets of parameters listed below, determine the magnitude of the roller's angular acceleration (in rad/s2). Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s².

7. 2) The lawn roller has a mass m = 60 kg and a radius of gyration about its gravitational center G, kG = 191 mm. It has a handle that connects to its center axle, and the handle is pushed forward with a force F= 437 N at a 45° angle. The coefficients of static and kinetic friction between the roller and the ground are us = 0.11 and uk = 0.07, respectively. For the sets of parameters listed below, determine the magnitude of the roller's angular acceleration (in rad/s2). Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s².

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.72P

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Concept explainers

Forced undamped vibrations

In mechanical engineering, vibration is expressed as the term that occurs due to an object's backward and forward movement about a point of equilibrium. Generally, there are three types of vibrations which are,

Question

7. 2) The lawn roller has a mass m = 60 kg and a radius of gyration about its
gravitational center G, kG = 191 mm. It has a handle that connects to its center axle,
and the handle is pushed forward with a force F= 437 N at a 45° angle. The
coefficients of static and kinetic friction between the roller and the ground are us =
0.11 and uk = 0.07, respectively. For the sets of parameters listed below, determine
the magnitude of the roller's angular acceleration (in rad/s2). Please pay attention:
the numbers may change since they are randomized. Your answer must include 2
places after the decimal point. Take g = 9.81 m/s2.
F
45°
200 mm
A
Your Answer:
Answer

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