Math Problem Statement

P diganti dengan 10

Hitunglah: 2 detik setelah dilepas berapa percepatan, kecepatan, jarak yang ditempuh dan tegangan tali saat itu?

Solution

The problem involves a system with three masses connected by a pulley. We need to analyze the acceleration, velocity, distance traveled, and tension in the cable after 2 seconds.

Here’s a breakdown of the setup based on the diagram and problem statement:

Problem Setup:

  • Mass M1=10kgM_1 = 10 \, \text{kg}.
  • Mass M2=P=10kgM_2 = P = 10 \, \text{kg} (as per your instruction).
  • Mass M3=15kgM_3 = 15 \, \text{kg}.
  • The inclined plane is at an angle determined by the dimensions (5 m horizontally and 3 m vertically).

Approach to Solving the Problem:

  1. Determine the Angle of Inclination for M2M_2 (using trigonometry).
  2. Calculate the System's Net Force:
    • Calculate the gravitational force component for each mass.
    • Use Newton’s second law to set up equations.
  3. Calculate Acceleration of the System.
  4. Calculate Velocity, Distance, and Tension in the Cable after 2 seconds.

I'll proceed with the calculations now.### Calculations and Results

  1. Angle of Inclination (θ\theta) for M2M_2: approximately 30.96°.

  2. Gravitational Forces:

    • F1F_1 (force on M1M_1): 98N98 \, \text{N}
    • F2F_2 (inclined component of force on M2M_2): 50.42N50.42 \, \text{N}
    • F3F_3 (force on M3M_3): 147N147 \, \text{N}
  3. Net Force: approximately 1.42N-1.42 \, \text{N} (indicating slight opposing force, resulting in deceleration).

  4. Acceleration: approximately 0.041m/s2-0.041 \, \text{m/s}^2.

  5. Velocity after 2 seconds: approximately 0.081m/s-0.081 \, \text{m/s}.

  6. Distance after 2 seconds: approximately 0.081m-0.081 \, \text{m}.

Interpretation

The system experiences a slight deceleration due to the opposing force, which results in a small backward motion over 2 seconds.

Would you like further details on any specific step, or have questions?


Additional Questions to Explore:

  1. How would changing M3M_3 affect the net acceleration?
  2. What would happen if PP was increased to 15 kg?
  3. How does the angle of inclination influence the system’s movement?
  4. How can tension in the cable be calculated in such systems?
  5. What effect does friction have on an inclined plane setup?

Tip:

When analyzing inclined plane problems, always resolve forces parallel and perpendicular to the incline for accurate calculations.

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Math Problem Analysis

Mathematical Concepts

Newtonian Mechanics
Inclined Plane Analysis
Pulley System

Formulas

Newton's Second Law: F = ma
Kinematic equations: v = u + at, s = ut + 0.5at^2
Tension in rope for connected systems
Trigonometric calculations for inclined planes

Theorems

Newton's Laws of Motion

Suitable Grade Level

Grades 11-12