What is the normal force between the crate and the wedge?What is the smallest force P needed to pull out the wedge? Crate and WedgeThe crate weighs 300 lb and µs at allcontacting surfaces is 0.3. Assume thewedges have negligible weight. Find thesmallest force P needed to pull out thewedge.AB15°

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What is the normal force between the crate and the wedge? What is the smallest force P needed to pull out the wedge?

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter6: Beams And Cables

Section: Chapter Questions

Problem 6.84P: The cable supports three 400-lb loads as shown. If the maximum allowable tension in the cable is 900...

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

What is the normal force between the crate and the wedge?

What is the smallest force P needed to pull out the wedge?

Crate and Wedge
The crate weighs 300 lb and µs at all
contacting surfaces is 0.3. Assume the
wedges have negligible weight. Find the
smallest force P needed to pull out the
wedge.
A
B
15°

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