How much work was done on the mass?

  • Thread starter Thread starter OstralyanPain
  • Start date Start date
  • Tags Tags
    Mass Work
AI Thread Summary
The discussion revolves around calculating the final velocity and work done on a 1.20 x 10^3-kg block accelerated by a 2.20 x 10^3-N force over 50 meters. The user initially calculated the work done using the formula W=Fd, but received feedback to correct their arithmetic, noting the importance of tracking exponents accurately. For finding the final velocity, suggestions included calculating acceleration first or using the work-energy principle to relate work done to kinetic energy. The conversation emphasizes the correct application of physics formulas and careful arithmetic in problem-solving. Accurate calculations are essential for deriving the correct answers to both parts of the problem.
OstralyanPain
Messages
1
Reaction score
0

Homework Statement


A 1.20 x10^3-kg block starting from rest is accelerated by a 2.20x10^3-N force for a distance of 50.0 meters along a horizontal frictionless surface.

a. What is the final velocity of the mass?

b. How much work was done on the mass?

I have no clue how to get A but for B i just Used W=Fd and got 2.20x10^3-N * 50m =
0.11 (Nm)

Can someone confirm my answer to B and help me with A?

Thanks.
 
Physics news on Phys.org
OstralyanPain said:
I have no clue how to get A but for B i just Used W=Fd and got 2.20x10^3-N * 50m =
0.11 (Nm)
Correct formula, but redo that arithmetic. (Keep better track of the exponents.)

For A, either find the acceleration and use kinematics or use the result of part B and relate the work done to the kinetic energy.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Similar threads

Distribution of Energy when work is done on a system of 2 masses connected by a spring
Replies
17
Views
2K
How do I find the work done for a 100 N downward force?
Replies
4
Views
2K
Solving for Work Done When Accelerating a Mass
Replies
3
Views
785
What is the work done on cart by the string?
Replies
1
Views
2K
Work Done by Gravity and Tension in a Pulley System
Replies
3
Views
2K
Newton's law problem: Pushing 2 stacked blocks on a horizontal table
Replies
13
Views
3K
Finding the work done by a block
Replies
4
Views
3K
Rocket + Connected Body Dynamics problem
Replies
47
Views
3K
How much work can be done given force, mass, angle & displacement?
Replies
18
Views
4K
Work done by gravitational force (new problem)
Replies
9
Views
2K

Hot Threads

Recent Insights

Back
Top