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3 years ago

Please help asap!99 points

Physics

2 answers:

Artemon [7]3 years ago

5 0

Answer:

Explanation:

1) Potential energy is energy due to an object's position relative to a reference. The higher the object, the larger its energy.

2) Potential energy is highest at Point A as it is the highest.

3) Kinetic energy is energy due to an object's motion relative to a reference. The fastest the object, the larger its energy.

4) Kinetic energy is highest at Point C as the speed there is the highest.

vladimir2022 [97]3 years ago

3 0

Answer:

1. Define potential Energy: Potential energy is a type of energy an object has because of its position.

2. Where is the potential Energy the highest in the picture? : A

3. Define Kinetic Energy: The energy of a body or a system with respect to the motion of the body or of the particles in the system.

4. Where is the Kinetic Energy the highest in the picture? : C

I hope this helps you!

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A mass of 3.0 kg rests on a smooth surface inclined 34° above the horizontal. It is kept from sliding down the plane by a spring

azamat

Answer:

The spring stretched by x = 13.7 cm

Explanation:

Given data

Mass = 3 kg

k = 120 $\frac{N}{m}$

Angle $\theta$ = 34°

From the free body diagram

Force acting on the box = mg sin $\theta$

⇒ F = 3 × 9.81 × $\sin34$

⇒ F = 16.45 N ------- (1)

Since box is attached with the spring so a spring force also acts on the box.

$F_{sp}$ = k x

$F_{sp}$ = 120 $x$ -------- (2)

The net force acting on the body is given by

$F_{net} = ma$

Since acceleration of the box is zero so

$F_{net} = 0$

$F - F_{sp} = 0$

$F = F_{sp}$

Put the values from equation (1) & (2) we get

16.45 = 120 $x$

x = 0.137 m

x = 13.7 cm

Therefore the spring stretched by x = 13.7 cm

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3 years ago

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2 years ago

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Answer:

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Answer:

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3 years ago

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Answer:

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