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Polar Coordinates (r-θ)

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(1)

2142211 Dynamics NAV 1

Polar

Coordinates (r-θ)

(2)

2142211 Dynamics NAV 2

Position

Time derivative of unit vectors: and

Velocity

Acceleration

Special Case: Circular Motion

Examples

3. Polar Coordinates (r-θ)

(3)

2142211 Dynamics NAV 3

Applications

3. Polar Coordinates (r-θ)

(4)

2142211 Dynamics NAV 4

Position Vector

3. Polar Coordinates (r-θ)

(5)

2142211 Dynamics NAV 5

Velocity

3. Polar Coordinates (r-θ)

Time derivative of unit vectors

(6)

2142211 Dynamics NAV 6

3. Polar Coordinates (r-θ)

Time derivative of unit vectors

(7)

2142211 Dynamics NAV 7

Velocity

3. Polar Coordinates (r-θ)

Acceleration

(8)

2142211 Dynamics NAV 8

3. Polar Coordinates (r-θ)

Acceleration

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2142211 Dynamics NAV 9

3. Polar Coordinates (r-θ)

Circular Motion

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2142211 Dynamics NAV 10

Example 1: Robot Arm

3. Polar Coordinates (r-θ)

Ans:

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2142211 Dynamics NAV 11

Example 2: Hydraulic Cylinder

3. Polar Coordinates (r-θ)

Ans: -0.75 m/s, 7.5 rad/s, 9.74 m/s2, 65 rad/s2

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2142211 Dynamics NAV 12

Example 3: Two links

3. Polar Coordinates (r-θ)

Ans:

Referensi

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