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-Dominant- [34]
3 years ago
13

Heeeelllllllpppp I need this right now

Physics
2 answers:
dem82 [27]3 years ago
7 0
Static friction

hope this helps
Elenna [48]3 years ago
5 0
Static friction hope this helps you
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Which of the following is not true about minerals?
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I think it's A but I'm not sure

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Two objects (42.0 and 21.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley h
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Answer:

a = 3.27 m/s²

T = 275 N

Explanation:

Given that:

Mass m₁ = 42.p0 kg

Mass m₂ = 21.0 kg

Consider both masses to be in a whole system, then:

The acceleration can be determined as:

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

Making acceleration the subject in the above formula;

a =\dfrac{g(m_1-m_2)}{(m_1+m_2)}

a =\dfrac{9.8(42.0-21.0)}{(42.0+21.0)}

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a =\dfrac{205.8}{(63.0)}

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in the string, the tension is calculated using the formula:

T = \dfrac{2m_1m_2g}{(m_1+m_2)}

T = \dfrac{2(42)(21)(9.81)}{(42+21)}

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8 0
3 years ago
the coefficient of static friction between a 40 kg picnic table and the ground below is .43. what is the greatest horizontal for
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