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ELEN [110]
3 years ago
8

What is the force on a 250 kg elevator that is falling freely at 9.8 m/sec2?​

Physics
2 answers:
Anettt [7]3 years ago
7 0

Answer:

\boxed {\boxed {\sf 2450 \ Newtons }}

Explanation:

The elevator is falling freely and the only force acting on it is weight. So,  calculate the weight.

We can do this by multiplying the mass by the acceleration of gravity.

W=m*g

The mass of the elevator is 250 kilograms and the acceleration of gravity is 9.8 meters per second squared.

m= 250 \ kg \\g= 9.8 \ m/s^2

Substitute the values into the formula.

W= 250 \ kg * 9.8 \ m/s^2

Multiply.

W=2450 \ kg*m/s^2

  • 1 kilogram meter per second squared is equal to 1 Newton
  • So, our answer of 2450 kg*m/s² is equal to 2450 N

W= 2450 \ N

The force of weight on the elevator is <u>2450 Newtons</u>

Viefleur [7K]3 years ago
6 0

Answer:

Since it is falling freely, the only force on it is its weight, w.

w = m × g = 250 kg × 9.8 m/s^2 = 2450 Newton/N

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Sholpan [36]

Answer:

A Fan Cart Initially Has An Acceleration Of 1.6m/s/s When It's Fan Is Directed Straight Backwards. If You Rotate The Fan By 45o, By What Percentage Do You Expect The Fan Cart's Thrust To Decrease? (Answer Should Be In Units Of 96)

a. 45%

b. 29%

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d. 50%

The correct answer is d.

d. 50%

Explanation:

Fan cart acceleration = 1.6 m/s²

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That is the thrust reduces by 50 %

3 0
3 years ago
A balloon-powered car rolls across the floor at a speed of 0.711 m/s. How long does it take to cover 8.25 m?
devlian [24]

Answer:

Time = 11.60 seconds.

Explanation:

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

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Given the following data;

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Distance = 8.25m

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Making time the subject of formula, we have;

Time = \frac{distance}{speed}

Substituting into the equation, we have;

Time = \frac{8.25}{0.711}

Time = 11.60 secs.

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