Question: Consider the truss in ( Figure 1 ) . Suppose that P 1 = 5 kN , P 2 = 8 kN , and P

Consider the truss in

(

Figure

1) .

Suppose that P

1

= 5

,

2

= 8

,

and P

3

= 10

.

Figure

1

1

A truss consists of

13

members joined by eight pins. The pin at

'

'

is supported by a roller on a horizontal surface. The pin at B is

1.5

meters to the right of

'

' .

The pin at C is

1.5

meters to the right of B

.

The pin at D is

1.5

meters to the right of C

.

The pin at E is fixed to the horizontal surface

1.5

meters to the right of D

.

The pin at H is

1

meter above B

.

The pin at G is

2

meters above C

.

The pin at J is

1

meter above D

.

The members are

'

'

,

B C

,

C D

,

D E

,

E J

,

J G

,

G H

,

'

',

B H

,

H C

,

C G

,

C J

,

and J D

.

A force of

4

kilonewtons is applied at point

'

'

and is directed downward. Two loads labeled P subscript

1

are applied at points H and E and are directed downward. Load P subscript

2

is applied at point J and is directed downward. Load P subscript

3

is applied at point G and is directed downward.

Part A

Determine the force in member BC

.

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

FBC

=

nothing

Request Answer

Part B

Determine the force in member HC

.

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

FHC

=

nothing

Request Answer

Part C

Determine the force in member HG

.

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

FHG

=

nothing

Request Answer

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