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PIT_PIT [208]
3 years ago
15

A spring hangs at rest from a support. If you suspend a 0.46 kg mass from the spring it elongates 0.79m.

Physics
1 answer:
Fudgin [204]3 years ago
4 0

a. The restoring force in the spring has magnitude

F[spring] = k (0.79 m)

which counters the weight of the mass,

F[weight] = (0.46 kg) g = 4.508 N

so that by Newton's second law,

F[spring] - F[weight] = 0   ⇒   k = (4.508 N) / (0.79 m) ≈ 5.7 N/m

b. Using the same equation as before, we now have

F[weight] = (0.75 kg) g = 7.35 N

so that

(5.7 N/m) x - 7.35 N = 0   ⇒   x = (7.35 N) / (5.7 N/m) ≈ 1.3 m

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AYUDA!!!!
xeze [42]

Answer:

4. B) 69N

5. B) 7.2kg

Explanation:

Dados los siguientes parámetros;

Masa = 7kg

Peso = 71N

La aceleración debida a la gravedad es igual a 9.8m/s².

a. Para determinar el peso de la siguiente masa;

Matemáticamente, el peso viene dada por la fórmula;

Peso = masa * aceleración debida a la gravedad

Peso = 7 * 9.8

Peso = 68.6 ≈ 69 Newton.

b. ¿Cuál es la masa sobre la tierra de un objeto que pesa.

Peso = masa * aceleración debida a la gravedad

71 = masa * 9.8

Masa = 71/9.8

Masa = 7.2 Kilograms.

3 0
3 years ago
I need the answer please help
timurjin [86]

Answer:

A) Inertia

Explanation:

Inertia is why objects tend to resist changes in their motion. Like a rolling ball will keep rolling unless we try to add friction to it, which then would stop the ball.

3 0
2 years ago
Read 2 more answers
To drive a car at a constant velocity, you
kipiarov [429]

Answer:

the answer is C

Explanation:

The car, first is at rest and if you don't accelerate it won't move. When to hit the gas it will accelerate from rest

8 0
2 years ago
Tell me any 5 importance of medicinal plants​
s344n2d4d5 [400]

Answer:

Aloe, Tulsi, Neem, Turmeric, and Ginger are medicinal plants that can help with a variety of diseases. Ginger, green tea, walnuts, aloe, pepper, and turmeric are just a few of these plants. Some plants and their derivatives are key sources of active compounds used in aspirin and toothpaste, among other things.

Explanation:

Plant name:                                    Uses:

1. Marshmallow:      ////  Relief from aching muscles and pain in muscle, Heals insect bite.             ////

2.California poppy ////  Relieves tension, Removes nervous system

3. Tulsi                ////   Cures sore throat, Cures fever and asthma

4. Neem               ////       Cures skin diseases, Cures diabetics

5. Aloevera      ////             Heals burns, Relieves constipation

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3 0
3 years ago
A car (mass = 1090 kg) is traveling at 30.4 m/s when it collides head-on with a sport utility vehicle (mass = 2880 kg) traveling
Thepotemich [5.8K]

Answer:

The sport utility vehicle was traveling at V2= 11.5 m/s.

Explanation:

m1= 1090 kg

V1= 30.4 m/s

m2= 2880 kg

V2= ?

m1*V1 = m2*V2

V2= (m1*V1)/m2

V2= 11.5 m/s

7 0
4 years ago
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