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Physics 2048 Lab Report 3

# Physics 2048 Lab Report 3 - Physics 2048 Lab Report Lab 4...

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Physics 2048 Lab Report Lab 4: The Inclined Plane and Frictional Force Date Due: September 30, 2010 Abstract: The static friction was measured by calculating the angle of the incline when the block began to slide down the plane and kinetic friction of the block were measured for all surfaces of the block by making note of the time it took the block to travel .025 meters on an incline of the specified angle. For example, the static friction coefficient for the wide wood side was .857 N for the angle of 25˚ and the static friction was .613 N.

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Introduction: Understanding how forces applied and the incline of a plane is an important concept in Physics. Forces are pushes or pulls that accelerates an object. The acceleration is directly proportional to the net force and inversely proportional to the mass. This can be expressed as F=ma, where the m is the mass and the a is the acceleration. Friction is the force resisting the relative motion of solid surfaces, fluid layers, or material elements sliding against each other. There are two types of friction, kinetic and static friction. Static friction is the friction between two solid objects that are not moving relative to each other. The coefficient of static friction (µs) should always be greater than your coefficient of kinetic friction (µk) because the static friction must first overcome an applied force so that the object can move. The kinetic friction is the friction that occurs when two objects are moving relative to each other or rubbing together. In order to find kinetic friction, one must first calculate the acceleration of the object. Also one needs to know the acceleration of gravity, which is 9.8m/s 2 . Theory: In this experiment we will calculate the static friction and kinetic friction of the wooden block and the inclined plane for all four surfaces of the block. The experimenters will first measure the mass of the block, then time how long it takes to travel a distance of .025 meters. The acceleration was calculated by finding 2 times the distance divided by time squared. It is important to find the acceleration of the block for each trial because the
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