Recent content by cjknowland

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    Finding Force then converting to work

    Homework Statement A 1.50 x 10^3 kg car starts from rest and accelerates uniformly to 19.3 m/s in 11.6 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. (b) Find the instantaneous power output of the engine at t =...
  2. C

    How Do You Calculate Tension and Work for a Sledge Pulled at an Angle?

    thank you so much =]
  3. C

    How Do You Calculate Tension and Work for a Sledge Pulled at an Angle?

    okay I got an answer of 76.76... I don't know if its correct
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    How Do You Calculate Tension and Work for a Sledge Pulled at an Angle?

    F-fk=MA but in order to find fk, I need to use fk=(coefficient of friction)(normal force) but i do not know how to find the normal force with the information given.
  5. C

    How Do You Calculate Tension and Work for a Sledge Pulled at an Angle?

    I believe the key is that the acceleration is zero but I do not know how to apply it...
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    How Do You Calculate Tension and Work for a Sledge Pulled at an Angle?

    Homework Statement A sledge loaded with bricks has a total mass of 17.4 kg and is pulled at constant speed by a rope inclined at 19.2° above the horizontal. The sledge moves a distance of 20.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is...