• Support PF! Buy your school textbooks, materials and every day products Here!

Momentum and Impulse Homework-Help Please

  • Thread starter Jayson5
  • Start date
  • #1
1
0

Homework Statement


A bronze statue of Bhudda was completed in Tohyo in 1993. The statue is 35 m tall and has a mass of 1,000,000 kg. Suppose this statue were to be moved to a different location. What is the magnitude of the impulse that must act on the statue in order for the speed to increase from 0 m/s to .2 m/s? If the magnitude of the net force acting on the statue is 12.5 kN, how long will it take for the final speed to be reached?


Homework Equations


p=mv


The Attempt at a Solution


I have no idea where to begin...
 

Answers and Replies

  • #2
Filip Larsen
Gold Member
1,237
169
Impulse is change in momentum. Using the formula for momentum you gave, what are the momentum of the Bhudda at rest and what is it when it moves with 0.2 m/s? The difference between these two is the the impulse.

In order to find the time it takes to accelerate the Bhudda you need establish how impulse, that is change in momentum over time, and force are related. Its a very simple relationship.

An alternative, but a slightly bit more involved way would be to look at how force, mass and acceleration are related and how (constant) acceleration, speed and time are related.
 
  • #3
berkeman
Mentor
56,663
6,560

Homework Statement


A bronze statue of Bhudda was completed in Tohyo in 1993. The statue is 35 m tall and has a mass of 1,000,000 kg. Suppose this statue were to be moved to a different location. What is the magnitude of the impulse that must act on the statue in order for the speed to increase from 0 m/s to .2 m/s? If the magnitude of the net force acting on the statue is 12.5 kN, how long will it take for the final speed to be reached?


Homework Equations


p=mv


The Attempt at a Solution


I have no idea where to begin...
Welcome to the PF. What is the definition of Impulse? Is time involved?

http://en.wikipedia.org/wiki/Impulse

.
 

Related Threads for: Momentum and Impulse Homework-Help Please

  • Last Post
Replies
1
Views
8K
Replies
18
Views
2K
Replies
13
Views
5K
Replies
1
Views
2K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
6
Views
2K
Replies
9
Views
1K
  • Last Post
Replies
3
Views
1K
Top