The motor shown in the figure rotates a 12- 4 ACME thread that drives a bolt attached to the bottom end of a 20-Inch link. The top end of the link is connected to a platform pivoted at point A and used to raise and lower the platform. With the platform in the vertical position, how many turns must the threaded rod be rotated to lower the platform to the horizontal position?

Q: y

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Q: h a 60° 60° --X

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A: The mass of casting is 120kg after 6% of its mass was machined off. Determine the mass of the…

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A: Let’s divide the shaded area into two sections. Section 1 is a circular arc OCD and section 2 is a…

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Fluid Kinematics

The branch of science that deals with objects which are either in motion or stationary are studied under the branch of classical mechanics. Fluid mechanics is a subcategory of classical mechanics that deals with the behavior of fluids at rest (fluid statics) or in motion (posing some velocity). In fluid kinematics, studies focus on the associated motion of fluid particles or groups of particles, and its associated parameters like displacements, velocity, and acceleration without concerning about the forces that caused the motion. All the laws of classical mechanics are applied in the study of fluid kinematics.