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
rjkz [21]
3 years ago
5

A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what

is the mass of the box (in kg)?
Physics
1 answer:
Thepotemich [5.8K]3 years ago
4 0
F= ma
31-mg = m(-2.5m/s2)
31= mg-2.5 m
31 = m*(9.8m/s2 -2.5 m/s2)
31 = 7.3 m
m = 31/7.3
m = 4.25 kg
You might be interested in
En la siguiente expresión matemáticas w=mg el peso w con relación a se relaciona con la masa m en una proporción
s2008m [1.1K]

Answer:

a) Directamente proporcional

Explanation:

El peso se puede definir como la fuerza que actúa sobre un cuerpo o un objeto como resultado de la gravedad.

Matemáticamente, el peso de un objeto viene dado por la fórmula;

Peso = mg

Donde;

m es la masa del objeto.

g es la aceleración debida a la gravedad.

De la expresión matemática, podemos deducir que el valor del peso de un objeto es directamente proporcional a la masa del objeto.

Por lo tanto, un aumento en la masa de un objeto provocaría un aumento en el peso del objeto y viceversa.

4 0
3 years ago
What type of evidence is needed for a hypothesis to be supported or not supported?
NISA [10]

Answer:

Hypotheses must be testable, and once tested, they can be supported by evidence. If a statement is made that cannot be tested and disproved, then it is not a hypothesis.

8 0
2 years ago
Name 4 COARSE grained rocks
MrRa [10]

Answer:

Diorite, Gabbro, and Granite

Explanation:

8 0
2 years ago
Read 2 more answers
1. Sound waves produced by a vibrating object are _____.
boyakko [2]
1. Sound waves produced by a vibrating object are compressional waves.
2. Loudness is the human perception of sound wave intensity.
3. The process of detecting objects by bouncing sounds off them is called echolocation. 
6 0
3 years ago
Read 2 more answers
A=?<br> m =3.4 kg<br> F = 7kN<br> a=f/m
Mrac [35]

Answer:

a=4,

m=7

F=

a=7so??sl

Explanation:

xddddddddddddd

6 0
2 years ago
Other questions:
  • A dog runs 30 feet to the north then 5 feet to the south what is the displacement of the dog
    12·2 answers
  • One of the longer sides of a kite is 39 feet. one of the shorter sides is 25 feet. half the length of the shorter diagonal is 15
    13·1 answer
  • For a person with a Near Point (NP) = 45 cm, what would be his prescription's lens power = _____________ diopters. A) 0.947368 d
    10·1 answer
  • If EMS waves are transverse, what conclusion can you make concerning the distances they can travel?
    5·1 answer
  • When electromagnetic fields interact with charged particles
    5·1 answer
  • Which one of the following statements does not accurately describe the diatonic scale as it corresponds to the setup on a piano
    14·2 answers
  • The physical (natural) laws which establish how things work can be investigated by the scientific method. True or False
    12·2 answers
  • Explain how you can use the factors of production to produce a fruit juice in a production company
    12·1 answer
  • If you are sitting in a bus that is traveling along a straight, level road at 100 km/hr., you are traveling at 100 km/hr too. (a
    14·1 answer
  • If the mass of a portion is 1.67 x 10-27kg and the mass of an electron is 9.11 x 10-31kg, calculate the force of gravitation bet
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!