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
8_murik_8 [283]
3 years ago
8

I'm not quite sure how the formula works. I thought it was

Physics
1 answer:
juin [17]3 years ago
4 0

Answer:

See the explanation below.

Explanation:

Of course yes, after my explanation you will understand very well how to analyze this type of problems.

First, we must differentiate the weight of the mass, the mass has units of kilograms or pounds, while the weight is the product of the mass by gravitational acceleration. In this way, we have the following formula for the weight of anybody.

w = m*g

where:

w = weight [N] (units of Newtons]

m = mass [kg]

g = gravity acceleration = 9.81 [m/s²]

When we have the product of these units [kg]*[m/s²], We are always going to get as a result the units of Newtons [N], The Newton is a unit of force.

Now, to solve this problem we must use Newton's second law, which tells us that the sum of forces on a body must be equal to the product of mass by acceleration.

ΣF = m*a

where:

ΣF  = forces acting over the gymnast [N]

m = mass = 55 [kg]

a = desacceleration = 6*9.81 = 58.86 [m/²]

Now we have two forces acting over the gymnast the first one is his or her weight (the mass by the gravity acceleration) and the second force is the one made it by his or her legs upwards in order to be standing. Let's take as positive signs the movements and forces upwards and negative downwards

- (m*g) + Fl = m*a

where:

Fl = force made it by the legs [N]

As the deceleration is upward because it prevents the person from continuing to go down, it is taken as a positive sign.

- (55*9.81) + Fl = (55*58.86)

Fl =  (55*58.86) + (55*9.81)

Fl = 3776.85 [N]

I hope you can understand :)

You might be interested in
A ____________ sloped line means the object is returning to the starting point. A Upward B Backwar C Missing D Downward
Damm [24]

Answer:

A downward sloped line means the object is returning to the starting point.

4 0
3 years ago
By what percent must one increase the tension in a guitar string to change the speed of waves on the string from 301 m/s to 343
garri49 [273]

Answer:

29.8 %

Explanation:

7 0
3 years ago
Which of these is an example of a mechanical wave? A. the light of the Sun B. a car stuck in traffic C. the shaking from an eart
sesenic [268]
A Explanation: I took this test before
5 0
3 years ago
The diffusion coefficients for species A in metal B are given at two temperatures: T (°C) D (m2/s) 1020 8.01 × 10-17 1290 7.86×
Solnce55 [7]

Explanation:

Below is an attachment containing the solution.

5 0
3 years ago
A 60 N force is applied over a distance of 15 m. How much work was done?
GuDViN [60]

Answer:

900J

Explanation:

w =f×s

60×15

=900J

thus the k.e of the body is 900j

3 0
2 years ago
Other questions:
  • How do animals release water vapor?
    6·1 answer
  • two sets of 3 consecutive integers have a property that the product of the larger two is one less than seven times the smallest
    12·1 answer
  • A man attempts to pick up his suitcase of weight ws by pulling straight up on the handle.(Figure 1) However, he is unable to lif
    9·2 answers
  • Billiard ball A of mass mA = 0.125 kg moving with speed vA = 2.80 m/s strikes ball B, initially at rest, of mass mB = 0.140 kg .
    7·1 answer
  • A valid hypothesis must have test for proving what?
    10·1 answer
  • Which statement accurately describes which subatomic particles are involved in nuclear and chemical reactions?
    15·1 answer
  • If a plant grows among many tall trees in a dense forest,how could it adapt so that it could get enough air and water
    8·1 answer
  • Formula for calculating work done in machines ​
    13·1 answer
  • 3. Solve for y:<br><br><br> 14=84 over y <br><br><br> what is y
    7·1 answer
  • Describe briefly how you would<br> determine the density an<br> irregular object (stone)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!