Applied force is 335N is used to get a chair moving on a surface with a coefficient of kinetic friction 0.330. If the object is accelerating at 0.722m/s/s, whats it's mass?

Question

Lilah Solomon

Physics

31 May, 01:50

Applied force is 335N is used to get a chair moving on a surface with a coefficient of kinetic friction 0.330. If the object is accelerating at 0.722m/s/s, whats it's mass?

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Answers (1)

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Susan · Answer 1

Correct answer: m = 83.29 kg

Explanation:

According to Newton's second law, the movement of the chair is:

F - Ffr = m · a = > F - k m g = m a = > F = k m g + m a = > m (k g + a) = F

If we take that g = 10 m/s² then we get

m = F / k g + a = 335 / 0.33 · 10 + 0.722 = 83.29 kg

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