Express the answer to three significant figures. Determine the mass of an object that has a weight of (a) 20 mN, (b) 150 kN, and (c) 60 MN. Evaluate each of the following and express with an appropriate prefix: (a) 1430 kg22, (b) 10.002 mg22, and (c) 1230 m23. Convert each of the following to three significant figures: (a) 20 lb # ft to N # m, (b) 450 lb>ft3 to kN>m3, and (c) 15 ft> h to mm> s. Convert each of the following and express the answer using an appropriate prefix: (a) 175 lb>ft3 to kN>m3, (b) 6 ft>h to mm>s, and (c) 835 lb # ft to kN # m. Evaluate each of the following to three significant figures and express each answer in Sl units using an appropriate prefix: (a) 354 mg(45 km) > (0.0356 kN), (b) (0.004 53 Mg) (201 ms), and (c) 435 MN> 23.2 mm.
Evaluate each of the following to three significant figures and express each answer in SI units using an appropriate prefix: (a) (0.631 Mm)>(8.60 kg)2, (b) (35 mm)2(48 kg)3. SOLUTION Using Table 1–2 and applying Eq. If the rocket is on the moon, where the acceleration due to gravity is gm = 5.30 ft>s2, determine to three significant figures (c) its weight in SI units and (d) its mass in SI units. Specify (a) its mass in SI units and (b) its weight in SI units. A rocket has a mass of 250(103) slugs on earth. Use an appropriate prefix.ģ 1 kg 520 lb 1 ft 4.448 N b a ba b ba 3 0.3048 m 1 lb 9.81 N ftġ–9. Determine its density (mass> vol.) in SI units. The specific weight (wt.> vol.) of brass is 520 lb>ft3. Atmospheric pressure at sea level is 14.7 lb> in2. To show this, convert 1 Pa = 1 N>m2 to lb>ft2. The pascal (Pa) is actually a very small unit of pressure. If a car is traveling at 55 mi>h, determine its speed in kilometers per hour and meters per second.ĥ5 mi 5280 ft 0.3048 m 1 km ba ba ba b 1h 1 mi 1 ft 1000 mĨ8.5 km 1000 m 1h ba ba b = 24.6 m>s 1h 1 km 3600 sġ–7.
Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) m>ms, (b) mkm, (c) ks>mg, and (d) km # mN.ī) mkm = 1102-611023 m = 1102-3 m = mm c) ks>mg = d) km # mN =ġ–5.
Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) kN>ms, (b) Mg>mN, and (c) MN>(kg # ms). What is its density expressed in SI units?ġ–3. Round off the following numbers to three significant figures: (a) 58 342 m, (b) 68.534 s, (c) 2553 N, and (d) 7555 kg.ġ–2. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458.ġ–1. This publication is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. © 2013 Pearson Education, Inc., Upper Saddle River, NJ. Chapter 1 General Principles Chapter 2 Force Vectors
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