Thermodynamics
Which of the following contact forces always acts perpendicular to the surface of contact?
A block is resting on an inclined plane. Which of the following free body diagrams correctly represents the contact forces acting on the block?
A spring with a spring constant of 200 N/m is stretched by 0.1 meters from its equilibrium position. What is the magnitude of the force exerted by the spring?
A spring exerts a force of 50 N when it is compressed by 0.25 m. What is the spring constant of this spring?
Under what conditions does static friction apply?
A 5 kg block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.3. What is the maximum force of static friction that can act on the block?
A block of mass is placed on an inclined plane with an angle . The coefficient of static friction between the block and the plane is . What is the minimum force required to prevent the block from sliding down the plane?
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According to Archimedes' Principle, what determines the buoyant force on an object submerged in a fluid?
An object has a density of 800 kg/m³. If the density of water is 1000 kg/m³, will the object float or sink when placed in water?
A 0.1 m³ object is fully submerged in water (density 1000 kg/m³). What is the buoyant force acting on the object?