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2142111 Statics – Class 0-1

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2142111 Statics – Class 0-1

Assignment Date: Friday 13 January 2012 Submission Date: In Class

Name ID & Email

1. Describe the forces and motion of a kicked balled moving in the air as a) a deformable body, b) a rigid body and c) a particle.

2. Identify physical quantities as scalar (s)/vector (v)/others (t) and specify appropriate SI units

, volume , area , surface

, time , temperature , mass

, work , power , energy

, torque , moment , momentum

, displacement , distance , density

, speed , velocity , acceleration

, force , weight , pressure

, stress , strain

3. Write down the specified governing equations

Sum of forces is equal to zero in vector form

Sum of moments about point O is equal to zero in vector form Sum of forces in the x direction is equal to zero in scalar form Sum of forces in the x direction is equal to zero in vector form

(2)

4. Define this tensile force v=2ˆ+4ˆ+6 kN ˆ

F i j k (F= 56 kN) which acts at O by various means.

unit vector coordinates

directional cosines elevated angles, xy plane

elevated angles, yz plane elevated angles, zx plane

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