The 50-kg block in the figure is initially at rest on a horizontal plane. Determine the friction force between the block and the surface after P was gradually increased from 0 to 245.25 N. In which phase will the block be classified (Phase 1- no motion, Phase 2 - impending motion, or Phase 3- in motion)? P. W = 50(9.81) %3D = 490.5 N 4, = 0.5 = 0.2 Hint: At which phase will the block be if P- 245.25N - Phase 1 (no motion)? Phase 2 (impending motion)? Phase 3 (in motion)? Make use of the coefficient of friction and the normal force to solve for the maximum frictional force.

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Recitation 4
The 50-kg block in the figure is initially at rest on a horizontal plane. Determine the friction force between the block and
the surface after P was gradually increased from 0 to 245.25 N. In which phase will the block be classified (Phase 1 - no
motion, Phase 2 - impending motion, or Phase 3- in motion)?
P.
W= 50(9.81)
= 490,5 N
4, = 0.5
H= 0.2
Hint: At which phase will the block be if P 245.25N- Phase 1 (no motion)? Phase 2 (impending motion)? Phase 3 (in motion)?
Make use of the coefficient of friction and the normal force to solve for the maximum frictional force.
Transcribed Image Text:Recitation 4 The 50-kg block in the figure is initially at rest on a horizontal plane. Determine the friction force between the block and the surface after P was gradually increased from 0 to 245.25 N. In which phase will the block be classified (Phase 1 - no motion, Phase 2 - impending motion, or Phase 3- in motion)? P. W= 50(9.81) = 490,5 N 4, = 0.5 H= 0.2 Hint: At which phase will the block be if P 245.25N- Phase 1 (no motion)? Phase 2 (impending motion)? Phase 3 (in motion)? Make use of the coefficient of friction and the normal force to solve for the maximum frictional force.
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