Physics (10th Edition)

Published by Wiley
ISBN 10: 1118486897
ISBN 13: 978-1-11848-689-4

Chapter 4 - Forces and Newton's Laws of Motion - Problems - Page 116: 57


68 kg

Work Step by Step

$mg\sin\theta=f_{s}$ $\implies m=\frac{f_{s}}{g\sin\theta}=\frac{390\,N}{9.8\,m/s^{2}\times\sin 36^{\circ}}=68\,kg$
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