- #1
goodOrBad
- 25
- 2
- Homework Statement
- If given G find weight Q necessary for a uniform descent of G
- Relevant Equations
- Fx=0
Fy=0
This is my attempt of solving it
How Do You Solve a Block on a Slope with a Given Weight?
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SUMMARY
The discussion centers on solving the physics problem of a block on a slope with a given weight, focusing on the angles involved in the tension components. The participants debate the accuracy of the angle measurements, specifically questioning whether the angle between the string and the block is indeed 20 degrees or should be recalculated to 50 degrees based on the slope's angle of 30 degrees. The consensus suggests that the angle around the pulley is 140 degrees, but acknowledges that the block cannot descend uniformly due to changing angles during motion.
PREREQUISITES- Understanding of basic physics concepts such as tension and forces on inclined planes.
- Familiarity with trigonometric functions and angle calculations.
- Knowledge of Newton's laws of motion as they apply to objects on slopes.
- Ability to analyze free-body diagrams for complex systems.
- Study the principles of tension in inclined planes using physics textbooks.
- Learn how to create and interpret free-body diagrams for similar problems.
- Explore the effects of varying angles on tension and motion in physics simulations.
- Review Newton's laws of motion with a focus on applications involving pulleys and slopes.
Students studying physics, educators teaching mechanics, and anyone interested in solving problems related to forces on inclined planes and tension in ropes.
- #2
- 15,879
- 9,049
The angle between the string and the face of block G does not look like 20o to me. You will have to recalculate the components of the tension perpendicular and parallel to the incline.
- #3
goodOrBad
- 25
- 2
It is given as 20 but my drawing is not faithful
- #4
goodOrBad
- 25
- 2
it looks more like this
- #5
goodOrBad
- 25
- 2
or should the angle of T1 be 50 due to the slope being 30deg and the rope 20deg so 50deg
and that means angle around the pulley is 50+90=140deg
and that means angle around the pulley is 50+90=140deg
- #6
- 42,802
- 10,495
Yes.goodOrBad said:
But the block cannot descend uniformly since that angle will change.
- #7
goodOrBad
- 25
- 2
Okay but without the unfiorm descent would this be it
- #8
- 42,802
- 10,495
Looks right.