anonymous
  • anonymous
If a mass of 2.0 kg is lifted through a height of 5.0 m, what force does it require to lift it at constant speed?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
mg
anonymous
  • anonymous
Doesn't matter how high its lifted. The gravitational force experience = mass * acc. due to gravity. To balance this, an equal force in the opposite direction is required. So first calculate the gravitational force
anonymous
  • anonymous
@amishra

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anonymous
  • anonymous
Gravitational force is 9.81 m/s^2 ? If so, Then we just use f=ma like F= 2*9.81 ? Is this correct?
anonymous
  • anonymous
Wait... your question is what force is needed to keep it stationary or at constant speed. If stationary...do what I told you If constant speed, you need a net force of 0
anonymous
  • anonymous
but yeah that's correct
anonymous
  • anonymous
Wait, what force is needed to lift the object, assuming that we are moving at constant speed. So the force should come out to be negative right?
anonymous
  • anonymous
Lift the object at constant speed..? Force is a vector unit so depending on which direction you put it could be pos or neg
anonymous
  • anonymous
That's the question :/ Okay, thank you so much! :D
anonymous
  • anonymous
sure. anytime

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