100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary Work, Energy and Power R150,00   Add to cart

Summary

Summary Work, Energy and Power

 39 views  0 purchase

Covers all that is needed in the Matric physics syllabus under the Work, energy and power section all definitions taken from the SAGS and includes diagrams

Preview 2 out of 5  pages

  • August 28, 2019
  • 5
  • 2019/2020
  • Summary
All documents for this subject (8)
avatar-seller
Danetucker
WORK ENERGY AND POWER

WORK
Work – the product of the displacement and the component of the force acting
parallel to the displacement


W = FcosθΔxx
W = work done on object (J)
F = component of force acting parallel to displacement (N)
Δxx = displacement (m)
θ = angle between applied force and displacement


Whenever work is done energy is transferred from one object to another
Work done = energy transferred


POSITIVE AND NEGATIVE WORK
 Whether energy is transferred to or removed from depends on the
direction of the force and its displacement
 Only components of force acting parallel to displacement count as work
 Force same direction = energy transferred to = positive work
 Force opposite direction = energy removed from = negative work

, GRAVITATIONAL POTENTIAL ENERGY
Gravitational potential energy – the energy an object possesses due to its
position relative to a reference point


Ep = mgh


m = mass (kg)
g = 9.8
h = height (m) # All of these values are scalars


KINETIC ENERGY
Kinetic energy – the energy an object has as a result of its motion


Ek = ½ mv2


m = mass (kg)
v = velocity (m.s-1)


MECHANICAL ENERGY
Mechanical energy – the sum of the gravitational potential energy and kinetic
energy at a point


Emech = Ep + Ek

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

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 this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Danetucker. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for R150,00. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

82871 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 14 years now

Start selling
R150,00
  • (0)
  Buy now