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Q. 54

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 258

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Short Answer

The spring shown in FIGURE P10.54 is compressed and used to launch a physics student. The track is frictionless until it starts up the incline. The student’s coefficient of kinetic friction on the incline is .

a. What is the student’s speed just after losing contact with the spring?

b. How far up the incline does the student go?

(a) The student's speed just after losing contact with the spring is .

(b) The distance the student goes up the incline in .

See the step by step solution

Step by Step Solution

Step 1: Given information (part a)

The spring shown below is compressed and is used to launch a physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the incline is .

Step 2: Explanation (part a)

From the conservation of energy, energy in the compressed string is given as:

The student’s speed just after losing contact with the spring

Step 3: Given information (part b)

The spring shown below is compressed and is used to launch a physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the incline is .

Step 4: Explanation (part b)

Let l be the distance traveled. then conservation of energy equation will become:

The students can go up to

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