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3 years ago

4. Explain how energy is transformed in a spring.

Physics

1 answer:

Ugo [173]3 years ago

4 0

Answer:

As spring falls in a vertical plane, the change in gravitational potential energy is transformed to elastic potential energy.

Explanation:

To calculate the spring constant, Hooke's law was used, as well as potential energy to calculate the gravitational and elastic potential energy.

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A projectile is launched upward at an angle of 70⁰ from the horizontal and strikes the ground a certain distance down range. For

OLga [1]

Answer:20°

Explanation:

Recall

Range R of a projectile is given by U^2sin2A/g

We're U = velocity,A= angle of projection and g is acceleration due to gravity

From the question the range R are the same

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3 years ago

A 75 kg man and a 100. Kg woman are playing tug of war on a frictionless surface. The man accelerates toward the woman at 2.0 m/

Artemon [7]

Complete Question

A 75 kg man and a 100. Kg woman are playing tug of war on a frictionless surface. The man accelerates toward the woman at 2.0 m/s2.How much force does she use to pull on the rope

Answer:

The value is $F = 150 \ N$

Explanation:

From the question we are told that

The mass of the man is $m_m = 75 \ kg$

The mass of the woman is $m_f = 100 \ kg$

The acceleration of the man is $a_m = 2.0 \ m/s ^2$

Generally the force which she used to pull the rope is mathematically represented as

$F = m * a$

=> $F = 75 * 2$

=> $F = 150 \ N$

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3 years ago