Book review
SPH4U unit 2 bundle
This bundle consist of 1) Summary 2) Helpful videos 3) Simulations 4) End of unit review questions
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Content preview
Unit 2Work (W)
Work is the product of the force (F) applied to an object over a distance (d) in which the object travels
as a result of the force
Formula: , θ is the angle between F and unit = Joules = 1Nm
When work is done on an object, the energy of the object will:
1. Increase (work due to applied force forward)
2. Decrease (work due to friction)
How do we find work if the force is not constant?
• Find the area under an F-d graph
Negative force= force acting on the opposite direction
Potential and kinetic energy
Type of potential energy Associated Formulas
● Gravitational PE Ek=½ mv 2
● Elastic PE Eg=mgh
● Chemical PE W=ΔEk
Note:
● Work on a circular part = 0J as cos 90= 0
Law of Conservation of Energy
• In an isolated(closed) system, mechanical energy is neither created nor destroyed.
Isolated system: choose reference points,
• Formula: EM initial (Eg1+Ek1) = EM final (Eg2+Ek2)
• Note: Energy is path independent in a closed system, meaning that If each path has the
same vertical height, an object traveling down either path will have the same speed
• at the bottom
Thermal energy: If energy is lost due to friction, mechanical energy turns into thermal energy
Formula: •ETH=Work done by friction
= FF d (cos180)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller kendrick2. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$35.47. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77973 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now