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malfutka [58]
4 years ago
10

A 100 kg man stands on bathroom scale inside an elevator, on planet where free fall acceleration is 10 m.s^2. Elevator which was

initially at rest starts moving moving up with constant acceleration 5 m/s^2. Reading of the scale is
Physics
1 answer:
andreyandreev [35.5K]4 years ago
8 0

Answer:

<h2>The scale will read 1kN</h2>

Explanation:

The man will feel heavy than they really are (because the floor is pushing up on them with a force larger than their weight)

like wise if the elevator descends the man will feel lighter than he is

we know

Force= mass X acceleration due to gravity

given that the mass m of the man=100kg

free fall acceleration is= 10 m.s^2.

the scale reading will be equal to the force F

F=100*10

F=1000N

The scale will read 1000N or 1kN

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MatroZZZ [7]

Answer:

3.974 Joule

Explanation:

Diameter of ring = 7.7 cm

a = Distance from the center = d/2 = 3.85 cm = 0.0385 m

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k = Coulomb constant = 9×10⁹ Nm²/C²

Work done will be equal to Potential energy when mass is at center

U=\frac{kQq}{a}\\\Rightarrow U=\frac{9\times 10^9\times 5\times 10^{-6}\times 3.4\times 10^{-6}}{0.0385}=3.974\ J

∴ Work to move a tiny 3.4 mC charge from very far away to the center of the ring is 3.974 Joule

4 0
3 years ago
Read 2 more answers
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7 0
3 years ago
On a straight horizontal track along which blocks can slide with negligible friction, block 1 slides toward block 2, which is in
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If the mass and post-collision speed of block 1 is known, the momentum of the block 2 can be determined.

<h3>What is momentum?</h3>

The momentum of an object in motion is the product of mass and speed of the object.

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The principle of conservation of linear momentum states that, the sum of the initial momentum must be equal to the sum of the final momentum.

m_1v_1 = m_2 v_2

Thus, if the mass and post-collision speed of block 1 is known, the momentum of the block 2 can be determined.

Learn more about conservation of linear momentum here: brainly.com/question/7538238

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2 years ago
Give two examples of contact force and non contact force
Crank

Answer:

Explanation:

The two examples of contact forces are frictional force and applied force. The two examples of noncontact forces are gravitational force and magnetic force.

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Which of the sites on this cross section would be the most likely place for a spring?
valentina_108 [34]
Had to look for the given illustration attached to this question and here is my answer. The site on the cross section provided wherein it is the most likely place for a spring would be SITE C. In the image, it is labeled sites A, B, C, and D. Hope this answers your question.
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