How Do You Calculate the Components of Weight on an Inclined Plane?

  • Thread starter Thread starter junesmrithi
  • Start date Start date
  • Tags Tags
    Incline
AI Thread Summary
To calculate the components of weight on an inclined plane, first identify the weight of the object, which is 51.5 lbs, and the angle of inclination, 33 degrees. The weight can be broken down into two components: one that acts parallel to the incline, causing the object to slide down, and another that acts perpendicular to the incline, pressing against it. Using trigonometry, the parallel component can be found by multiplying the weight by the sine of the angle, while the perpendicular component is found by multiplying the weight by the cosine of the angle. Drawing a diagram can help visualize these components and clarify the calculations needed. Understanding these principles is essential for solving problems related to inclined planes.
junesmrithi
Messages
10
Reaction score
0
URGENT--Weight on an Incline--please help

A 51.5 lb object is sitting on an inclined plane that makes a 33 degree angle with the horizontal. What is the component of weight that tends to make the object slide down the incline?
And, what is the component of weight that presses against the incline?

i don't know how to go about solving the problem, i don't know how to draw the diagram or what its asking me.
Please help
 
Physics news on Phys.org
Well, you've got a slope at an angle of 33 degrees, with an object resting on it. Can you not draw this?

Then, the object has a weight, which acts vertically downwards, and you are asked to calculate the components of the weight parallel and perpendicular to the slope. You can do this by trigonometry. Draw the diagram and this should become clearer.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top