Exam (elaborations)
PHY1505 Assignment 4 (COMPLETE ANSWERS) 2024
- Course
- Mechanics
- Institution
- University Of South Africa
100% TRUSTED WORKINGS, EXPLANATIONS & SOLUTIONS
[Show more]
Content preview
PHY1505 Assignment 4(COMPLETE
ANSWERS) 2024
CONTACT: biwottcornelius@gmail.com
, PHY1505 Assignment 4 (COMPLETE ANSWERS) 2024
1. A ball drops some distance and loses 30 J of
gravitational potential energy. Do NOT ignore air
resistance. How much kinetic energy did the ball gain? 2.
The plot in the figure shows the potential energy of a
particle, due to the force exerted on it by another
particle, as a function of distance. At which of the three
points labeled in the figure is the magnitude of the force
on the particle greatest? 3. An 8.0-kg block is released
from rest, with v1 = 0.00 m/s, on a rough incline, as
shown in the figure. The block moves a distance of 1.6-m
down the incline, in a time interval of 0.80 s, and acquires
a velocity of v2 = 4.0 m/s. How much work does gravity
do on the block during this process? 4. You do 174 J of
work while pulling your sister back on a swing, whose
chain is 5.10 m long. You start with the swing hanging
vertically and pull it until the chain makes an angle of
32.0° with the vertical with your sister at rest. What is
your sister's mass, assuming negligible friction? 5. A
tennis ball bounces on the floor three times. If each time
it loses 22.0% of its energy due to heating, how high does
it rise after the third bounce, provided we released it from
the floor? 6. A 60.0-kg person drops from rest a distance
of 1.20 m to a platform of negligible mass supported by
an ideal stiff spring of negligible mass. The platform drops
6.00 cm before the person comes to rest. What is the
spring constant of the spring? 7. A block slides down a
frictionless inclined ramp. If the ramp angle is 17.0° and
its length is find the speed of the block as it reaches the
bottom of the ramp, assuming it started sliding from rest
at the top. 8. A projectile is fired from ground level at an
angle of 40.0° above horizontal at a speed of 30.0 m/s.
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Lela40. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R46,46. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now