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GATE Questions with solutions: Shear Stress Video Lecture | Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

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FAQs on GATE Questions with solutions: Shear Stress Video Lecture - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

1. What is shear stress and how is it defined?
Ans. Shear stress is a measure of the force per unit area that acts parallel to the surface of an object. It is defined as the ratio of the force applied tangentially to the area over which it is applied. Shear stress is denoted by the symbol τ (tau).
2. What are the factors that affect shear stress?
Ans. Several factors can influence shear stress, including the magnitude of the force applied, the area over which the force is distributed, and the material's properties, such as its shear modulus. The shape and geometry of the object can also impact shear stress.
3. How is shear stress calculated in practical scenarios?
Ans. In practical scenarios, shear stress can be calculated using the formula τ = F/A, where τ is the shear stress, F is the applied force, and A is the area over which the force is distributed. This formula assumes that the force is applied parallel to the surface.
4. What are some real-life examples where shear stress is important?
Ans. Shear stress plays a crucial role in various fields. For example, it is essential in engineering structures like bridges, where it helps determine the strength and stability of the structure. Shear stress is also significant in fluid dynamics, as it affects the flow of liquids and gases.
5. How does shear stress differ from normal stress?
Ans. Shear stress and normal stress are both types of mechanical stresses but act in different directions. While shear stress acts parallel to the surface, normal stress acts perpendicular to the surface. Additionally, shear stress causes objects to deform or slide along the surface, whereas normal stress can compress or stretch the object.
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