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
mart [117]
3 years ago
5

A 13-N weight and a 12-N weight are connected by a massless string over a massless, frictionless pulley. The 13-N weight has a d

ownward acceleration with magnitude equal to that of a freely falling body times:
A. 1
B. 1/12
C. 1/13
D. 1/25
E. 13/25
Physics
1 answer:
drek231 [11]3 years ago
4 0

Answer:

D

Explanation:

We are given that

Weight,w_1=13 N

w_2=12 N

We have to find the acceleration of 13 N weight .

m_1=\frac{w_1}{g}=\frac{13}{g}kg

m_2=\frac{w_2}{g}=\frac{12}{g} kg

Net force,w_1-w_2=13-12=1 N

Total mass,m=m_1+m_2=\frac{13}{g}+\frac{12}{g}=\frac{25}{g}kg

Acceleration,a=\frac{Net\;force}{total\;mass}

Using the formula

a=\frac{1}{\frac{25}{g}}=\frac{1}{25}g

Where g=Acceleration due to gravity

Hence, option D is true.

You might be interested in
10 PTS!
spin [16.1K]
" This manual applies to Compact Liquid <span>Fuel Pumps & </span>Dispensers<span> The </span>liquid pressure<span> range is from 0.5 - 20m These totals </span>can<span> be displayed by </span>pressing<span> the CLEAR </span>button<span> on the preset keypad five times in When connecting to sites </span>powered<span> by. "</span>
5 0
3 years ago
Read 2 more answers
• Usain Bolt can run at 10 m/s. If he runs for about 20 seconds, how far around the race track did he go?
yanalaym [24]

Answer:

200metters

Explanation:

because in one second hes going 10 metter in 20 second he will go 20×10=200

4 0
3 years ago
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (40pts)
denpristay [2]

Answer:

False, true

Explanation:

3 0
3 years ago
Read 2 more answers
Physics double pivot question​
andriy [413]

Explanation:

Assuming the wall is frictionless, there are four forces acting on the ladder.

Weight pulling down at the center of the ladder (mg).

Reaction force pushing to the left at the wall (Rw).

Reaction force pushing up at the foot of the ladder (Rf).

Friction force pushing to the right at the foot of the ladder (Ff).

(a) Calculate the reaction force at the wall.

Take the sum of the moments about the foot of the ladder.

∑τ = Iα

Rw (3.0 sin 60°) − mg (1.5 cos 60°) = 0

Rw (3.0 sin 60°) = mg (1.5 cos 60°)

Rw = mg / (2 tan 60°)

Rw = (10 kg) (9.8 m/s²) / (2√3)

Rw = 28 N

(b) State the friction at the foot of the ladder.

Take the sum of the forces in the x direction.

∑F = ma

Ff − Rw = 0

Ff = Rw

Ff = 28 N

(c) State the reaction at the foot of the ladder.

Take the sum of the forces in the y direction.

∑F = ma

Rf − mg = 0

Rf = mg

Rf = 98 N

3 0
3 years ago
True or False:
bekas [8.4K]
I think it false. Sorry if i'm wrong.

5 0
3 years ago
Read 2 more answers
Other questions:
  • The box plots show the summer temperatures, in degrees Fahrenheit, in two cities. Summer Temperatures in City A Summer Temperatu
    5·2 answers
  • A car accelerates at 3 m/s*2. Assuming the car starts from rest, how much time does it need to
    10·2 answers
  • What were the key factors that made the wright brothers’ wind tunnel a useful tool for wing design?
    5·2 answers
  • Consider a thermometer at room temperature 20.0 ◦C. We now place it inside a water tank whose temperature is at 30.0 ◦C. After o
    5·1 answer
  • On top of a cliff of height h, a spring is compressed 5m and launches a projectile perfectly horizontally with a speed of 75 m s
    5·1 answer
  • Maria and Miquel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the
    11·2 answers
  • Answer:<br><br> A. 2y(x³ + 9x - 5x² - 45)<br><br> B. 2y(x² + 9)(x - 5)
    6·1 answer
  • The focused, penetrating sound of the koto, which is similar to the tone of Japanese vocal music, comes from the_______________
    7·1 answer
  • What is the resistance of al lamp that allows a current of 10 amps with 120 volts
    6·1 answer
  • Images formed by a convex mirror are always ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!