Honors physics dynamics question?

Click For Summary
SUMMARY

The discussion revolves around calculating the time it takes for a 100 kg crate to ascend a 3-meter ramp inclined at 25 degrees, given a tension of 850 N in the pulling rope and a sliding friction of 360 N. The crate starts with a velocity of 1 m/s at the bottom of the ramp. The key calculations involve determining the net force acting on the crate, applying Newton's second law, and using kinematic equations to find the time required for the ascent. The final answer is derived from these calculations, ensuring clarity in the free-body diagram and the forces involved.

PREREQUISITES
  • Understanding of Newton's second law of motion
  • Familiarity with free-body diagrams
  • Knowledge of kinematic equations
  • Basic concepts of friction and tension in physics
NEXT STEPS
  • Study the application of Newton's second law in inclined planes
  • Learn how to draw and analyze free-body diagrams
  • Explore kinematic equations for uniformly accelerated motion
  • Investigate the effects of friction on motion in physics
USEFUL FOR

Students studying physics, particularly those focusing on dynamics and mechanics, as well as educators looking for detailed examples of problem-solving in inclined plane scenarios.

carcinojenn
Messages
1
Reaction score
0
A rope is used to pull a 100 kg crate up a 25 degree, 3 meter long ramp. The tension in the rope is 850 N and the sliding friction along the ramp is 360 N. If the velocity of the crate at the bottom of the ramp is 1 m/s, how long does it take for the crate to make it to the top?

What would the free-body and calculations look like and what would the final answer be? Please try to be as detailed as possible, even if that means being repetitive or stating the obvious. I'm having a lot of trouble with understanding this. Any help would be greatly appreciated.
 
Physics news on Phys.org
Hi, carcinojenn.

What have you attempted so far? What are you assuming? Where do you get stuck?

People will be more willing to help if you show that you have attempted a solution. :)
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

Direction of a rope with a ball inside an accelerating box
  • · Replies 5 ·
Replies
5
Views
2K
Not sure how to plug in numbers for Work Energy Theorem
  • · Replies 13 ·
Replies
13
Views
3K
Friction Problem of a Crate Sliding Down a Ramp
  • · Replies 4 ·
Replies
4
Views
4K
Monkey accelerating up and down a rope
  • · Replies 38 ·
2
Replies
38
Views
5K
Maximum Acceleration of sliding crates
  • · Replies 6 ·
Replies
6
Views
2K
Coefficient of Friction question for a cart going down a wooden ramp
  • · Replies 18 ·
Replies
18
Views
3K
Calculating Final Speed of a Crate on a Ramp with Initial Velocity of 0.6 m/s
  • · Replies 4 ·
Replies
4
Views
4K
What is the acceleration of the upper crate when the top crate begins to slide?
  • · Replies 10 ·
Replies
10
Views
5K
Projectile Motion with Pulley System
  • · Replies 3 ·
Replies
3
Views
2K
Pushing crates up a frictionless ramp
  • · Replies 9 ·
Replies
9
Views
6K