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pychu [463]
3 years ago
12

An elevator with a mass of 2,560 kg is pulled straight up by a cable such that it accelerates at 4.5 m/s 2 in the upward directi

on. Find the net force on the elevator.
Physics
1 answer:
Lisa [10]3 years ago
8 0

Answer:

11,520N

Explanation

According to Newtons second law

Net force = mass * acceleration

Given

Mass = 2560kg

acceleration = 4.5m/s^2

Substitute the given values into the formula

F = 2560 * 4.5

F = 11,520N

Hence the net force on the elevator is 11,520N

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A skateboarder rolls down the sidewalk with an initial velocity of 0 m/s. If her acceleration is
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two forces x and y are acting at 120 degrees to each other, if the magnitude are 8N and 10N respectively determine their resulta
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The resultant force of both forces is 15.62 N.

<h3 /><h3>What is resultant?</h3>

The Resultant of forces is a single force obtained when two or more forces are combined.

To calculate the resultant of the force, we use the formula below.

Formula:

  • R = √[a²+b²-2abcos∅]..................... Equation 1

Where:

  • R = Resultant of the forces.
  • ∅ = Angle between both forces

From the question,

Given:

  • a = 8 N
  • b = 10 N

Substitute these values into equation 1

  • R = √[8²+10²-2×8×10cos120°]
  • R = √[64+100-160cos120°]
  • R =√ [164-160(-0.5)]
  • R = √[164+80]
  • R = √(244)
  • R = 15.62 N

Hence, the resultant force of both forces is 15.62 N.

Learn more about resultant force here: brainly.com/question/25239010

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If the temperature of a piece of steel decreases, what happens to its density? (1 point)
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As temperature decreases, the steel will contract (volume decreases) thereby, an increase in Density.
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