The centroid of the triangle below is closest to ______ as measured from (0,0)
Question 3
3.
Draggable item
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Corresponding Item
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Question 4
4.
What is the reaction force at the end of the roller connection given that the force is in pounds and each grid line is equal to 1 foot?
Question 5
5.
A 150 pound man is told to walk the plank on a pirate ship. The plank is a 2" x 6" plank of wood (the height is 2 inches) and 6 feet long. If the plank bends 0.75 inches, what is the modulus of elasticity?
Question 6
6.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
Calculate the magnitude and direction of the resultant force. Click on the correct answer.
Question 12
12.
Question 13
13.
Question 14
14.
Calculate the x-coordinate of the centroid of the complex shape.
Question 15
15.
Will the seesaw move? If so, in which direction?
Question 16
16.
What is d2 if the bears are in static equilibrium?
Question 17
17.
Question 18
18.
If the radius of the circle is 2 inches, what the is the y-coordinate of the centroid of this half circle?
1 in
0.750 in
0.849 in
8.376 in
3.151 in
1.151 in
1.333 in
4.376 in
6.376 in
Match definitions with the appropriate answers.
normal force
the geometric center of an object
centroid
the measure of the tendency of a force to rotate around a point
moment
an indicator of the stiffness of an object related to its chemical properties
modulus of elasticity
an indicator of the stiffness of an object related to the size and orientation
moment of inertia
the force that surfaces exert to prevent solid objects from passing through each other
tension force
force that is applied to an object by a person or another object
applied force
a force that is always downward toward the center of the earth
force gravity
force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends
642,300 psi
43,200 psi
225 psi
388,800 psi
25 psi
1,261,600 psi
Calculate the x-component of the given vector.
91.29 N
-3.47 N
40.81 N
19.70 N
31.7 N
41.3 N
34.20 N
93.97 N
Calculate the y-component of the given vector.
40.81 N
93.97 N
19.70 N
91.29 N
41.3 N
34.20 N
31.7 N
-3.47 N
In baseball, home plate is the dimensions of the diagram below. The x-coordinate of the centroid is 8.5 because it is symmetrical. Find the y-coordinate of the centroid of home plate as measured from the given axis.
7.18
6.61
6.82
12.75
11.33
4.25
8.5
A 2x4 board (whose actual dimensions are 1.5" x 3.5") is positioned on the floor as shown above. The distance between the supports is exactly 70 inches. When your 156 pound friend stands on the board it deflects exactly 1.34". Given the information, calculate the Modulus of Elasticity of the board in pounds per square inch.
848,881
155,208
0.98
207,976
5.36
A 2x4 board (whose actual dimensions are 1.5" x 3.5") is positioned on the floor as shown above. The distance between the supports is exactly 70 inches. Find the weight of the force in pounds that makes the beam deflect 0.42" if the Modulus of Elasticity of this board is 1.2 million psi.
401
378
69
152
241
Find the reaction force at B.
295 lbs
500 lbs
266.67 lbs
300 lbs
233.33 lbs
Calculate the moment that the wrench is generating if the length of the wrench is 18 CENTIMETERS
