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
MaRussiya [10]
3 years ago
10

The uniform diving board has a mass of 35 kg . A B 0.8 m 4 m Find the force on the support A when a 65 kg diver stands at the en

d of the diving board. The acceleration of gravity is 9.81 m/s 2 . Answer in units of kN.

Physics
1 answer:
andrew11 [14]3 years ago
6 0

Answer:

In other to get the force at the support A, we apply the principle of forces in equilibrium

For a system of forces to be at equilibrium, the sum of all upward forces must be equal to the sum of all downward forces

what are the forces in this system;

for exerted by diver = 65X9.81 = 637.65N = 0.64kN (acting downward)

weight of diving board = 35X9.81 = 343.35N = 0.3434kN (acting downward)

the reaction at point A, the support = RkN (acting upward)

The principle is stated mathematically as:

sum of all upward forces = sum of all downward forces

R = 0.64kN + 0.3434kN = 0.9834kN

hence, the force on the support A is 0.9834kN

Explanation:

First to convert the masses in kg to forces, you multiply by acceleration due to gravity

F = mg

That is how the forces were obtained

Secondly, note that all weight acts downwards and the only force to balance the weights in this system will be the upward reaction from the support at point A

Now you can now apply the principle of forces in equilibrium as stated above to get the unknown force.

You might be interested in
You are driving to the grocery store at 20 m/s. You are 110 m from an intersection when the light turns red. You have a reaction
Lynna [10]

Answer:

a)

reaction time = 0.70 s

distance travelled in reaction time = v*t

= 20 m/s * 0.70 s

= 14 m

So, when brake is applied, distance remaining= 110 m - 14 m = 96 m

Answer: 96 m

b)

vf = 0 m/s

d = 96 m

vi = 20 m/s

use:

vf^2 = vi^2 + 2*a*d

0 = 20^2 + 2*a*96

-400 = 2*a*96

a = -2.08 m/s^2

Answer: -2.08 m/s^2

c)

use:

vf = vi + a*t

0 = 20 - 2.08*t

t = 9.6 s

Answer: 9.6 s

Explanation:

8 0
2 years ago
The speed of a car increases uniformly from 6 m/s to 42 m/s in 9 second calculate the acceleration of the car​
djyliett [7]

The acceleration of the car​ which changes the speed uniformly is 4 m/s²

<h3>What is acceleration?</h3>

Acceleration can be defined as the rate change of velocity with time.

acceleration a = (Δv) / (Δt)

Given is the initial velocity 6m/s and final velocity 42m/s, the time take fir this change in speed is 9s.

Substitute the values, we have

a = (42-6)/9

a = 36/9

a =4 m/s²

Thus, the acceleration is 4 m/s²

Learn more about acceleration.

brainly.com/question/12550364

#SPJ1

5 0
2 years ago
A star has an absolute magnitude of 4 and a surface temperature of 5,000 degrees C. According to the HR diagram, list the type o
Ierofanga [76]
On sources it says it would  just be the super giant star 
3 0
3 years ago
The big bang produced an imprint of leftover heat called
tensa zangetsu [6.8K]
That's called the "Cosmic Microwave Background".  (CMB)
It was discovered in 1965, and its discoverers were awarded
the Nobel Prize in Physics in 1978.
7 0
3 years ago
Read 2 more answers
How long will a trip take in hours of you travel 450kmat an average speed of 80 km/hr
777dan777 [17]
5.625 hours and it is 450 divided by 80
Have A Good Day
4 0
3 years ago
Other questions:
  • Explain the mathematical equation for KVL (The voltage of a circuit through each component in that circuit is proportional to th
    15·1 answer
  • (a) What is the sum of the following four vectors in unit-vector notation? For that sum, what are (b) the magnitude, (c) the ang
    14·1 answer
  • A 0.500 kg block of lead is heated from 295 K to 350. K. How much heat was absorbed by the lead? (express your answer to the nea
    14·1 answer
  • A 270 g bird flying along at 5.0 m/s sees a 11 g insect heading straight toward it with a speed of 35 m/s (as measured by an obs
    6·1 answer
  • An advertisement for a new fish food claims that lab studies show that fish grew three inches in three weeks while eating the fo
    8·1 answer
  • The rainforest is hot, humid, and has frequent rainfall. In what way do the atmosphere and the hydrosphere contribute to this ty
    10·1 answer
  • El periodo de oscilación de un péndulo es de 4 segundo calcular el valor de la frecuencia​
    12·1 answer
  • What is the relationship between speed, frequency, and wavelength?
    12·2 answers
  • What is so fragile that just saying its name breaks it?​
    13·1 answer
  • A 12-V car battery supported a current of 150 mA to bulb calculate the power absorbed by the bulb over an interval of 20 mintues
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!