(II) A 20.0-kg box rests on a table. ( a ) What is the weight of the box and the normal force acting on it? ( b ) A 10.0-kg box is placed on top of the 20.0-kg box, as shown in Fig. 4–31. Determine the normal force that the table exerts on the 20.0-kg box and the normal force that the 20.0-kg box exerts on the 10.0-kg box.
(II) A 20.0-kg box rests on a table. ( a ) What is the weight of the box and the normal force acting on it? ( b ) A 10.0-kg box is placed on top of the 20.0-kg box, as shown in Fig. 4–31. Determine the normal force that the table exerts on the 20.0-kg box and the normal force that the 20.0-kg box exerts on the 10.0-kg box.
(II) A 20.0-kg box rests on a table. (a) What is the weight of the box and the normal force acting on it? (b) A 10.0-kg box is placed on top of the 20.0-kg box, as shown in Fig. 4–31. Determine the normal force that the table exerts on the 20.0-kg box and the normal force that the 20.0-kg box exerts on the 10.0-kg box.
Solve and answer the question correctly please. Thank you!!
r
2. Measuring Length
mm 1
cm
2
3
INCH 1 16THS
5 6 7 8 9
10 11
FAIRGATE COLD SPRING, NEW YORK
2
3
12
1.
Using the metric (top) scale only, what units are being used for the long lines
with the numbers? Hint: Remember that 2.54 cm = 1 in.
2.
What are the units of the small lines?
3. How many decimal places should be recorded using this tool?
4. What is the length of the red line? Note: Make sure to use the correct units
and decimal places.
5. Now observe your ruler. What metric units are used on your ruler?
6. How many decimal places should you record when using your ruler?
7.
Measure a box, book, coin and can and fill out the data table below. Make
sure to use units and the correct number of decimal places for your ruler.
Table 1: Measuring Length Data Table
Object
Length of the box
Length
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V
2
217
PROBLEM 3
Cables A and B are Supporting a 185-lb wooden crate.
What is the magnitude of the tension force in each
cable?
A
20°
35°
185 lbs
Chapter 4 Solutions
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