How do i find force and distance in this question

  • Thread starter Thread starter jacob275c
  • Start date Start date
  • Tags Tags
    Force Work
AI Thread Summary
To find the work done on the bobsled, the relationship between work, force, and distance must be utilized, specifically W=Fd. Given that the bobsled accelerates from rest to 5 m/s, the acceleration can be calculated using the formula a = (final velocity - initial velocity) / time. The discussion suggests exploring the connection between work and energy, as work can also be calculated using the change in kinetic energy formula, W = ΔKE. By determining the bobsled's final kinetic energy and knowing its mass, the work done can be derived without needing to find force or distance directly. Understanding these relationships is crucial for solving the problem effectively.
jacob275c
Messages
1
Reaction score
0
A 35 kg bobsled starts at rest and accelerates to 5 m/s on the horizontal section of the course how much work was done on the bobsled?

i know W=Fd but how do i find force and distance in this problem
i also know that f=ma but what does it mean when says that it accelerates does it means that its velocity or acceleration?
i have tried d=(0)T + (1/2)(5)T but I am not sure how to find time with the information or if that is correct
 
Last edited:
Physics news on Phys.org
Hi jacob275c. Welcome to PF!

Since you don't know F or d, you might take a different approach. Have you studied how work is related to energy?
 

Thread 'Errors and significant figures'

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...
View full post »
Thread 'A cylinder connected to a hanging mass'

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...
View full post »

Similar threads

How Does Friction Impact Bobsled Acceleration?
Replies
1
Views
3K
How do I find the work done for a 100 N downward force?
Replies
4
Views
2K
Why do I keep getting friction coefficient as a negative?
Replies
17
Views
3K
Finding the work done by a block
Replies
4
Views
3K
Solving for Work Done When Accelerating a Mass
Replies
3
Views
725
Work done by a force down a ramp
Replies
11
Views
2K
Misunderstanding Work-energy theorem and center of mass properties
Replies
7
Views
2K
Bead on a rod which is being pulled by an ideal string with velocity v
Replies
27
Views
943
Plotting the graph of Friction Force vs. time (Laws of motion)
Replies
1
Views
2K
Friction direction change in a inclined circular bend (car on a road)
Replies
11
Views
1K

Hot Threads

Recent Insights

Back
Top