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
IgorLugansk [536]
3 years ago
5

A 200 kg body is pulled up an inclined plane 15 m long and 5 m high. The force required to pull the body up the plane at a slow

uniform speed is 976 N. Compute the ideal mechanical advantage, the actual mechanical advantage and the efficiency of the plane under these conditions.
Physics
1 answer:
kobusy [5.1K]3 years ago
3 0

Answer: mechanical advantage = 2.0081

velocity ratio = 3, efficiency = 66.94%.

Explanation:

From the question, mass of object = 200kg, force (effort) = 976N.

Mechanical advantage = load /effort

the load is simply the weight of the object which w=mg, where m is mass of object and g = acceleration due gravity = 9.8 m/s²

Hence, load = 200* 9.8 = 1960 N

M.A = 1960/976 = 2.0081.

Velocity ratio = distance traveled by effort / distance traveled by load.

It can be seen that the object is meant to move up the height of 5m and the applied force is to move along the plane of 15m.

Hence distance traveled by effort = 15m, distance traveled by load = 5m

V.R = 15/3 = 5.

Efficiency = (M.A/V.R) * 100

Efficiency = 2.0081/5 * 100

Efficiency = 0.6694 * 100

Efficiency = 66.94%

You might be interested in
Dos cargas Q1=2pc y Q2=4pc estan separadas por una distancia de 6cm ¿con que fuerza se atraen?
noname [10]

Here we can use coulomb's law to find the force between two charges

As per coulombs law

]tex]F = \frac{kq_1q_2}{r^2}[/tex]

here we have

k = 9 * 10^9

q_1 = 2pC

q_2 = 4pC

r = 6cm = 0.06 m

now by using the above equation we have

F = \frac{9*10^9 * 2*10^{-12} * 4*10^{-12}}{0.06^2}

F = 2 * 10^{-11} N

so here the force between two charges is of above magnitude and this will be repulsive force between them as both charges are of same sign.

3 0
3 years ago
What is kepler's law??​
Elan Coil [88]
<h2>QUESTION:- </h2>

➜what is kepler's law??

\huge\red{\boxed{\huge\mathbb{\red A \pink{N}\purple{S} \blue{W}\orange{ER}}}}

Kepler gave the three laws or theorems of motion of the orbitals bodies

{\huge {\bold{ \red{ \star}}}}{ \blue{ \bold{FIRST \: \: \: LAW}}}

This law state that the celestial bodies revolves around the stars in elliptical orbit and star as a single focus.

Example :- Earth revolves around the Sun as assuming it as single focus

This also shows that earth revolves around the sun in elliptical orbit.

{\huge {\bold{ \blue{ \star}}}}{ \green{ \bold{SECOND \: \: \: LAW}}}

Area covered by the planet is equal in equal duration of time irrespective of the position of the planet.

It also states that Angular momentum is constant

As Angular momentum is constant it means areal velocity is also constant.

\frac{ \triangle \: A}{ \triangle \: T} = \frac{L}{2m}△T△A=2mL

where:-

A is the area.

T is the time.

L is the angular momentum.

M is the mass of the body.

{\huge {\bold{ \green{ \star}}}}{ \purple{ \bold{THIRD \: \: \: LAW}}}

square of the time of the revolution is directly proportional to the cube of the distance between the planet and star in Astronomical unit.

{T}^{2} = {a}^{3}T2=a3

where:-

T = time of revolution

a is the distance between the planet and star.

\purple\star \: {Thanks \: And \: Brainlist} \blue \star \\ {\orange{ \star}}{if \: U \: Like d \: My \: Ans} {\green{ \star }}

8 0
3 years ago
A 14.8-g piece of Styrofoam carries a net charge of -0.742 µC and is suspended in equilibrium above the center of a large, horiz
MAXImum [283]
Base on your question where a 14.8g of piece of Styrofoam carries a net charge of -0.742C and is suspended in equilibrium above the center of a large, horizontal sheet of plastic so the ask of the problem is to calculate  the charge per unit area on the plastic sheet. The answer would be 21.96
3 0
3 years ago
What is the distance between two spheres (20 kg and 30 kg) attracted by a force of 2 x 10^-5 Newtons.
creativ13 [48]
2 times 10 to the power of 5 is your answer.
6 0
4 years ago
If asked to describe a wave, you could say waves are the
serious [3.7K]

Good evening Carolina


You could say waves are the continuous transmission of energy from one location to the next.


I hope that's help:)


3 0
3 years ago
Read 2 more answers
Other questions:
  • To practice Problem-Solving Strategy 15.1 Mechanical Waves. Waves on a string are described by the following general equation y(
    7·1 answer
  • On the Moon, the acceleration due to the effect of gravity is only about 1/6 of that on Earth. An astronaut whose weight on Eart
    15·2 answers
  • How does the vacuum between the inner and outer walls of a thermos bottle limit energy loss through conduction and convection?
    11·1 answer
  • A Savior In Physics Please Help In This Question!!!!!!!!!!!!!!!!
    15·1 answer
  • A runner begins from rest and accelerates at a rate of 0.22 meters per second' for 15
    10·1 answer
  • wo bullets are fired at the same time with the same kinetic energy. If one bullet has twice the mass of the other, which has the
    9·1 answer
  • Examples of the period, frequency, speed of a wave in a sentence?
    10·1 answer
  • The observation that energy transformations are rarely 100% efficient is seen by scientists as a violation of the Law of Conserv
    13·2 answers
  • Calculate the gravitational potential energy of a 2 kg banana hanging 5
    7·1 answer
  • Consider a blimp that can be approximated as a 3-m diameter, 8-m long ellipsoid and is connected to the ground. On a windless da
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!