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mezya [45]
3 years ago
14

it is required that an object weighing 8N be moved up ward at an acceleration of 2m/s what is the upward force needed ​

Physics
1 answer:
sesenic [268]3 years ago
4 0

Answer:

F = 1.6 N

Explanation:

Newton's Second Law of Motion states that whenever an unbalanced force is applied on a body. It produces an acceleration in the body, in its own direction. The magnitude of the force is given by the following formula:

F = ma

where,

F = Force Required to Move the Object Upward = ?

m = mass of object

a = upward acceleration = 2 m/s²

but, we know that weight of object is given as:

Weight = mg

8 N = m(9.8 m/s²)

m = 0.8 kg

using values in the equation:

F = (0.8 kg)(2 m/s²)

<u>F = 1.6 N</u>

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2 years ago
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Answer:

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Explanation:

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Read 2 more answers
A +0.0129 C charge feels a 4110 N
Savatey [412]

Answer:

r = 14.13 m

Explanation:

Given that,

Charge 1, q₁ = +0.0129 C

Charge 2, q₂ = -0.00707 C

The force between charges, F = 4110 N

We need to find the distance between charges. The formula for the force between charges is given by :

F=k\dfrac{q_1q_2}{r^2}

Where

r is the distance between charges

So,

r=\sqrt{\dfrac{kq_1q_2}{F}} \\\\r=\sqrt{\dfrac{9\times 10^9\times 0.0129 \times 0.00707 }{4110 }} \\\\r=14.13\ m

So, the distance between charges is equal to 14.13 m.

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2 years ago
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