Problem #4. A beam is machined to be bolted at the base and have a channel for routing cables. As shown in the figure below, the cross sectional shape of the beam consists of a rectangular base under a square raised portion that has a semi-circular groove cut out of the top of it. The dimension of a for the machined beam is specified below. Determine: a) the centroid location, yc. along the vertical Yc axis. b) the moment of inertia, Ixc. about the centroidal xe axis. a 2.5 cm 3a a . 0.50 SR -0.50 20 301 So t Enter the centroid location y, in cm. TXC-

Elements Of Electromagnetics
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**Problem #4**: 

A beam is machined to be bolted at the base and have a channel for routing cables. As shown in the figure below, the cross-sectional shape of the beam consists of a rectangular base under a square raised portion that has a semi-circular groove cut out of the top of it. The dimension of \( a \) for the machined beam is specified below. Determine:

a) the centroid location, \( Y_c \), along the vertical \( Y_c \) axis.

b) the moment of inertia, \( I_{Xc} \), about the centroidal \( x_c \) axis. 

### Diagram Explanation:

- The diagram shows the cross-sectional view of a beam and is divided into two main sections.
- The bottom section is a rectangular base with a width of \( 5a \) and a height of \( a \).
- The top section is a square raised portion with a height and width of \( 3a \), with a semi-circular groove cut out at the top.
- The semi-circular groove has a radius of \( a \).
- The overall dimensions of the structure in the figure include:
  - Width of the entire base: \( 5a \)
  - Height of the base: \( a \)
  - Height of the raised square portion without the groove: \( 3a \)
  - Width of the raised square portion: \( 3a \)
  - Location of \( Y_c \), marked along the vertical axis.
  - Location of \( X_c \), marked on the horizontal axis.

**Parameters:**
- \( a = 2.5 \, \text{cm} \)

**Instructions:**
- Enter the centroid location \( y_c \) in cm.
Transcribed Image Text:**Problem #4**: A beam is machined to be bolted at the base and have a channel for routing cables. As shown in the figure below, the cross-sectional shape of the beam consists of a rectangular base under a square raised portion that has a semi-circular groove cut out of the top of it. The dimension of \( a \) for the machined beam is specified below. Determine: a) the centroid location, \( Y_c \), along the vertical \( Y_c \) axis. b) the moment of inertia, \( I_{Xc} \), about the centroidal \( x_c \) axis. ### Diagram Explanation: - The diagram shows the cross-sectional view of a beam and is divided into two main sections. - The bottom section is a rectangular base with a width of \( 5a \) and a height of \( a \). - The top section is a square raised portion with a height and width of \( 3a \), with a semi-circular groove cut out at the top. - The semi-circular groove has a radius of \( a \). - The overall dimensions of the structure in the figure include: - Width of the entire base: \( 5a \) - Height of the base: \( a \) - Height of the raised square portion without the groove: \( 3a \) - Width of the raised square portion: \( 3a \) - Location of \( Y_c \), marked along the vertical axis. - Location of \( X_c \), marked on the horizontal axis. **Parameters:** - \( a = 2.5 \, \text{cm} \) **Instructions:** - Enter the centroid location \( y_c \) in cm.
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