1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
just olya [345]
3 years ago
12

An upward force of 27.5 n is applied to a string to lift a ball with a mass of 2.5 kg.

Physics
1 answer:
Rudiy273 years ago
4 0
We first find that weight W of the ball
where W= ma
W= (2.5)(9.81)
= 24.525
therefore the net force acting upon the ball is
= upward force - weight
= 27.5 - 24.525
= 2.975 N
You might be interested in
A 1000 kg elevator accelerates upward at 1.0 m/s2 for 10 m, starting from rest. a. How much work does gravity do on the elevator
cricket20 [7]

Answer:

a)= 98kJ

b)=108kJ

c) = 10kJ

Explanation:

a. The work that is done by gravity on the elevator is:

Work = force * distance  

= mass * gravity * distance

= 1000 * 9.81 * 10  

= 98,000 J

= 98kJ

b)The net force equation in the cable

T - mg = ma

T = m(g+a)

T = 1000(9.8 + 10)

T = 10800N

The work done by the cable is

W = T × d

= 10800N × 10

= 108000

=108kJ

c) PE at 10m = 1000 * 9.81 * 10 = 98,100 J  

Work done by cable = PE +KE  

108,100 J = KE + 98,100 J  

KE = 10,000 J

= 10kJ

=

7 0
3 years ago
Read 2 more answers
Much of the pollution in out oceans comes from:
BabaBlast [244]

Answer:

c.) sewage and industrial waste

3 0
3 years ago
Is a light on potential or kinetic?
Basile [38]

its the the first one u said

7 0
3 years ago
Does A= 6.4 B=12 C=12.2 Form a RIGHT TRIANLGE?
Lina20 [59]
To answer this question, you must remember the equation:

a²+b²= c²

(6.4)² + (12)²=   (12.2)²

<span>40.96 + 144 = 184.96
</span> (12.2)² = <span>148.84
</span>
184.96 ≠ 148.84

This cannot be a triangle

hope this helps
3 0
3 years ago
Two large, plastic tubs were filled with soil The soil was shaped to create a mound in each tub. The starting height of each mou
shutvik [7]

Answer:

b

Explanation:

6 0
1 year ago
Other questions:
  • You are visiting your friend Fabio's house. You find that, as a joke, he filled his swimming pool with Kool-Aid, which dissolved
    10·2 answers
  • The electric potential, when measured at a point equidistant from two particles that have charges equal in magnitude but of oppo
    6·1 answer
  • Help ASAP!
    5·1 answer
  • The Sun orbits the center of the Galaxy in 225 million years at a distance of 26,000 lightyears. Given that a^3 = (M1 +M2) x P^2
    7·1 answer
  • Assume n1 and n2 are two adjacent energy levels of an atom. The emission of radiation with the longest wavelength would occur fo
    13·1 answer
  • An object is dropped from a height H. During the final second of its fall, it traverses a distance of 53.2 m. What was H? An obj
    11·1 answer
  • A rock falls from a high cliff and hits the ground in 6.5 seconds. What is the final velocity?
    7·1 answer
  • What is the most likely reason for some antelope to employ selective brain cooling
    7·1 answer
  • 4. What would you suggest we do to reduce our trade deficit?
    10·1 answer
  • Explain the idea of the electoral college and why the framers included this in the constitution.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!