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
solniwko [45]
3 years ago
7

a 28.7 KG sled is pulled forward with a 63 net force across the ground with MK equals 0.169 what is the acceleration of the sled

Physics
1 answer:
abruzzese [7]3 years ago
5 0

Answer:

0.54\ \text{m/s}^2

Explanation:

F = Force on the sled = 63 N

m = Mass of sled = 28.7 kg

\mu_k = Coefficient of kinetic friction = 0.169

g = Acceleration due to gravity = 9.81\ \text{m/s}^2

The force balance of the system is given by

F-\mu_k mg=ma\\\Rightarrow a=\dfrac{F-\mu_k mg}{m}\\\Rightarrow a=\dfrac{63-0.169\times 28.7\times 9.81}{28.7}\\\Rightarrow a=0.54\ \text{m/s}^2

The acceleration of the sled is 0.54\ \text{m/s}^2.

You might be interested in
What happens to a sound wave when it interferes with another sound wave having the same frequency but traveling in the opposite
Zolol [24]

its called destructive interference.


8 0
3 years ago
Read 2 more answers
Wind power holds great promise for the united states because of the _____________, and experts believe wind energy could meet as
SIZIF [17.4K]
Wind<span> power holds great promise for the united states because of the great wind power (capacity), and experts believe wind energy could meet as much as 20 percent of the nation’s energy needs . Texas is the state with most wind capacity. On the second place is Iowa and oh the third place Oklahoma. The wind farms produce clean energy that does not harm the environment.</span>
6 0
3 years ago
If I traveled 30 miles in 1 hour, then 20 miles in 1 hour, and 50 miles in 3
Harrizon [31]

Answer:

The answer is 20 miles/hr

Explanation:

5 0
3 years ago
Interactions of current carrying wires
koban [17]
Physics stack exchange
7 0
3 years ago
A 129-kg horizontal platform is a uniform disk of radius 1.51 m and can rotate about the vertical axis through its center. A 67.
blondinia [14]

Answer:

I = 274.75 kg-m²

Explanation:

given,

mass of horizontal platform = 129 Kg

radius of the disk = 1.51 m

mass of the person(m_p) = 67.5 Kg

standing at distance(r_p) = 1.09 m

mass of dog(m_d) = 25.3 Kg

sitting near the person(r_d) = 1.37 m from center

moment of inertia = ?

Moment of inertia of disc = \dfrac{1}{2}MR^2

Moment of inertia of the system

I = MOI\ of\ disk + m_p r_p^2 + m_d r_d^2

I = \dfrac{1}{2}MR^2 + m_p r_p^2 + m_d r_d^2

I = \dfrac{1}{2}\times 129 \times 1.51^2 + 67.5 \times 1.09^2 + 25.3\times 1.37^2

I = 274.75 kg-m²

3 0
3 years ago
Other questions:
  • Any clue on this one
    7·1 answer
  • Many fungi are decomposers. true or false ?
    5·1 answer
  • A cyclist intends to cycle up a 7.70o hill whose vertical height is 126m. Assuming the mass of bicycle plus person is 75.0kg, ca
    7·1 answer
  • An archer puts a 0.30-kg arrow to the bowstring. An average force of 201 N is exerted to draw the string back 1.3 m. Assuming th
    15·2 answers
  • Phosphorus-32, a radioactive isotope of phosphorus-31 (atomic number 15), undergoes a form of radioactive decay whereby a neutro
    10·1 answer
  • Help!! i need to know which letter has the highest speed, the middlest speed and the lowest speed!!
    6·1 answer
  • Question 4 (1 point)
    13·2 answers
  • Newtons first law of motion is also called galelios law of_______?
    15·2 answers
  • Under the Big Top elephant. Ella [2500 kg]. is attracted to Phant, the 3,000 kg elephant. They are separated by 8 m. What is the
    7·2 answers
  • Scientists have concluded that Earth is at risk of future impacts with meteoroids. What are some criteria that engineers conside
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!