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2 years ago

10

weight of Ali is 500andN.he is standing on the ground with an area of 0.025 m^2 area .we can find pressure under his feet. what

is it?

1 answer:

Inessa05 [86]2 years ago

8 0

Answer:

20000 Pa

Explanation:

Pressure is defined as the force per unit area.

Mathematically : P =F/A where F is force and A is area

Force = 500 N

Area= 0.025 m²

P= 500/0.025

P= 20000 Pa

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Explain the law of conversion of energy with an example and explain it

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Answer:

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Explanation:

From the question we are told that

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3 years ago

umka21 [38]

Answer:

Part a)

$a = 3.68 m/s^2$

Part b)

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Explanation:

Part a)

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$m_1g - T = m_1 a$

$T - m_2g = m_2 a$

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$(m_1 - m_2) g = (m_1 + m_2) a$

$a = \frac{m_1 - m_2}{m_1 + m_2} g$

now we know that

$m_1 = \frac{908}{9.8} = 92.65 kg$

$m_2 = \frac{412}{9.8} = 42 kg$

now from above equation we have

$a = \frac{92.65 - 42}{92.65 + 42}(9.8)$

$a = 3.68 m/s^2$

Part b)

When heavier block is removed and F = 908 N is applied at the end of the string then we have

$F - mg = ma$

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