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
Allisa [31]
3 years ago
7

Do simple machines change the amount of work done?

Physics
1 answer:
creativ13 [48]3 years ago
7 0

Simple machines make work easier by multiplying, reducing, or changing the direction of a force. The scientific formula for work is w = f x d, or, work is equal to force multiplied by distance. Simple machines cannot change the amount of work done, but they can reduce the effort force that is required to do the work

-Matt

You might be interested in
F all of the energy in a falling object's gravitational potential energy store is transferred to its kinetic energy store by the
stepladder [879]

Answer:

The options are not shown, so let's derive the relationship.

For an object that is at a height H above the ground, and is not moving, the potential energy will be:

U = m*g*H

where m is the mass of the object, and g is the gravitational acceleration.

Now, the kinetic energy of an object can be written as:

K = (1/2)*m*v^2

where v is the velocity.

Now, when we drop the object, the potential energy begins to transform into kinetic energy, and by the conservation of the energy, by the moment that H is equal to zero (So the potential energy is zero) all the initial potential energy must now be converted into kinetic energy.

Uinitial = Kfinal.

m*g*H = (1/2)*m*v^2

v^2 = 2*g*H

v = √(2*g*H)

So we expressed the final velocity (the velocity at which the object impacts the ground) in terms of the height, H.

5 0
2 years ago
Which statements about Earth’s core help explain Earth’s magnetic field? Check all that apply.
nalin [4]
<span>The inner core is liquid and moving.</span>
7 0
3 years ago
Read 2 more answers
Explain 5 things that could cause an incorrect mass when using the triple bean balance?
ludmilkaskok [199]
If the scale is not "zeroed". If you do not use grams (g) to lable your products. If you do not unlock the balance. [that's about all I got doll]
5 0
3 years ago
Read 2 more answers
A train crosses a bridge that is 1300 m long in 1 minute and 5 seconds.
Nat2105 [25]

Answer:

I'm pretty sure it's 20m/s because 1300m divided by 65 seconds is 20 so I think it's 20m/s

Explanation:

3 0
2 years ago
Each inner energy level of an atom has a maximum number of it can hold
CaHeK987 [17]
That would be a maximum of 4 atoms 
3 0
3 years ago
Read 2 more answers
Other questions:
  • The friction force between a bag and the floor is 4 N. what is the net force acting on the bag? What is the acceleration of the
    11·1 answer
  • Research has found that the greatest risk of developing a major depression occurs between the ages of 15-24 and 35-44. Your age
    7·1 answer
  • You are instructed to remove the appendicular skeleton of a cadaver. To accomplish this goal, you would
    9·1 answer
  • The tired of a car support the weight of a stationary. If onetire has a slow leak, the air pressure within the tire will_____wit
    14·1 answer
  • Need help can anyone solve this for me ?
    6·1 answer
  • If two objects are the same size but one object is 3 times hotter than the other object, the hotter object emits If two objects
    8·1 answer
  • Consider the electric force between a pair of charged particles a certain distance apart. By Coulomb's Law: If, the distance bet
    11·1 answer
  • A 36.75 kg boulder is rolling down a hill. If, at one moment, the boulder has a momentum of 241.5 kg. m/s, what is its
    14·1 answer
  • uppose a wheel is initially rotating at 10.0 rad/s while undergoing constant angular acceleration reaching a speed of 30.0 rad/s
    9·1 answer
  • PLEASE HELP!!!!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!