,© 2016 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently
exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.
1–1.
What is the weight in newtons of an object that has a mass
of (a) 8 kg, (b) 0.04 kg, and (c) 760 Mg?
Solution
(a) W = 9.81(8) = 78.5 N Ans.
(b) W = 9.81(0.04) ( 10 - 3 ) = 3.92 ( 10 - 4 ) N = 0.392 mN Ans.
(c) W = 9.81(760) ( 10 3
) = 7.46 ( 10 ) N = 7.46 MN
6
Ans.
Ans:
W = 78.5 N
W = 0.392 mN
W = 7.46 MN
1
,© 2016 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently
exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.
1–2.
Represent each of the following combinations of units in
the correct SI form: (a) >KN>ms, (b) Mg>mN, and
(c) MN>(kg # ms).
Solution
(a) kN>ms = 103N> ( 10 - 6 ) s = GN>s Ans.
(b) Mg>mN = 106g>10 - 3 N = Gg>N Ans.
(c) MN>(kg # ms) = 10 N>kg(106 -3
s) = GN>(kg # s) Ans.
Ans:
GN>s
Gg>N
GN>(kg # s)
2
, © 2016 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently
exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.
1–3.
Represent each of the following combinations of unit in the
correct SI form: (a) Mg>ms, (b) N>mm, (c) mN>(kg # ms).
Solution
Mg 103 kg
(a) = = 106 kg>s = Gg>s Ans.
ms 10-3 s
N 1N
(b) = = 103 N>m = kN>m Ans.
mm 10-3 m
10-3 N
= kN>(kg # s)
mN
(kg # ms)
(c) = Ans.
10-6 kg # s
Ans:
Gg>s
kN>m
kN>(kg # s)
3
exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.
1–1.
What is the weight in newtons of an object that has a mass
of (a) 8 kg, (b) 0.04 kg, and (c) 760 Mg?
Solution
(a) W = 9.81(8) = 78.5 N Ans.
(b) W = 9.81(0.04) ( 10 - 3 ) = 3.92 ( 10 - 4 ) N = 0.392 mN Ans.
(c) W = 9.81(760) ( 10 3
) = 7.46 ( 10 ) N = 7.46 MN
6
Ans.
Ans:
W = 78.5 N
W = 0.392 mN
W = 7.46 MN
1
,© 2016 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently
exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.
1–2.
Represent each of the following combinations of units in
the correct SI form: (a) >KN>ms, (b) Mg>mN, and
(c) MN>(kg # ms).
Solution
(a) kN>ms = 103N> ( 10 - 6 ) s = GN>s Ans.
(b) Mg>mN = 106g>10 - 3 N = Gg>N Ans.
(c) MN>(kg # ms) = 10 N>kg(106 -3
s) = GN>(kg # s) Ans.
Ans:
GN>s
Gg>N
GN>(kg # s)
2
, © 2016 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently
exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher.
1–3.
Represent each of the following combinations of unit in the
correct SI form: (a) Mg>ms, (b) N>mm, (c) mN>(kg # ms).
Solution
Mg 103 kg
(a) = = 106 kg>s = Gg>s Ans.
ms 10-3 s
N 1N
(b) = = 103 N>m = kN>m Ans.
mm 10-3 m
10-3 N
= kN>(kg # s)
mN
(kg # ms)
(c) = Ans.
10-6 kg # s
Ans:
Gg>s
kN>m
kN>(kg # s)
3
