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sladkih [1.3K]
3 years ago
14

Two students push a heavy crate across the floor. John pushes with a force of 185 N due east and Joan pushes with a force of 165

N at 30∘north of east. What is the resultant horizontal force on the crate?

Physics
1 answer:
zubka84 [21]3 years ago
3 0

Answer:

327.894 N

Explanation:

We have given two forces Jhon pushes with a force of 185 N in east direction and Joan pushes with a force of 165 N at 30° north of east which is clearly shown in figure

We fave to find the total horizontal force

So total horizontal force will be F_X=185+165cos30^{\circ} =327.894 N ( total horizontal force will be sum of force in the east direction and horizontal component of the force in north- east direction)

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7 0
2 years ago
Two particles are moving along the x axis. Particle 1 has a mass m₁ and a velocity v₁ = +4.7 m/s. Particle 2 has a mass m₂ and a
nirvana33 [79]

Answer:

m₁ / m₂ = 1.3

Explanation:

We can work this problem with the moment, the system is formed by the two particles

The moment is conserved, to simulate the system the particles initially move with a moment and suppose a shock where the particular that, without speed, this determines that if you center, you should be stationary, which creates a moment equal to zero

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Another way to solve this exercise is to use the mass center relationship

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We derive from time

   Vcm = 1/M   (m₁ v₁ + m₂v₂)

As they say the velocity of the center of zero masses

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4 0
3 years ago
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andriy [413]

Answer:

Explanation:

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Dog travels 3.5 m south .

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then dog travels 8.2 m , 23.1 degree north of east

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D₂ = 8.2 cos23.1 i + 8.2 sin23.1  j

= 7.54 i + 3.22 j  

Third displacement

D₃ = - 15i

Total displacement = D₁ + D₂ + D₃

= - 3.5 j + 7.54 i + 3.22 j  -15i

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5 0
2 years ago
What is the density of a block with a mass of 36 g and a volume of 9 cm3?.
pshichka [43]
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density of the block is
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