Solving for Tension in an Elevator with Acceleration of 3.0 m/s^2 | Physics Help

  • Thread starter Aiasha
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In summary, the conversation is about a physics test and a problem involving an elevator's weight and tension in its cable. The person is struggling with understanding physics and needs help with showing their work. They are given a tip to consider the tension being greater than gravity and to use the equation for net force to find the mass and acceleration. The importance of direction is also mentioned.
  • #1
Aiasha
9
0
guys iam takin physics
its a takhom test
nd i don't get physics attt allll!
pllz hlp me with this
i need to show work as well

an elvtor weighing 25,000 N is supported by a steal cable. that is the tension in the cable wehn the elavotor is begin accelerated upward at the reate of 3.0 m/s^2? (g= 9.8m/s^2)
pleasezz help[
 
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  • #2
TIP: The tension in the cable must be greater than the gravity pulling down. Think about that.

Also remember that if this is an isolated system where only tension and gravity are acting on the elevator, the net force is equal to the gravity + tension. Is there a way you can find the mass? Once you find the mass, might there be also be a way to calculate the netforce using mass and the acceleration? REmember, Netforce=Gravity+Tension
 
  • #3
remember

[tex]\sum \overline{F} = m\overline{a}[/tex]

directions are imp.
 

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