A box weighing 100N starts to move across a horizontal surface when a horizontal force of 25N

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A box weighing 100N starts to move across a horizontal surface when a horizontal force of 25N is applied to it, but a force of only 20N is needed to keep it moving in uniform motion.

a) What are the coefficients of static and kinetic friction?

b) If the force is not applied horizontally but in a direction 30 degrees above the horizontal, find the coefficients of static and kinetic friction.

Related Book For answer-question

Corporate Computer Security

ISBN: 978-0133545197

4th edition

Authors: Randy Boyle, Raymond Panko

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Posted Date: Feb 04, 2020 02:42 AM

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A box weighing 100N starts to move across a horizontal surface when a horizontal force of 25N

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First a free body diagram is performed for each situation Where f is the force of kinetic friction fk or static fs depending on the case N is the normal force exerted by the soil on the block W is the ... View the full answer

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