Physics-
General
Easy

Question

The work done in dragging a stone of mass 100 kg up an inclined plane 1 in 100 through a distance of 10 m is (take g equals 9.8 blank m s to the power of negative 2 end exponent)

  1. Zero    
  2. 980 J    
  3. 9800 J.    
  4. 98 J    

The correct answer is: 98 J


    Slope of inclined plane, sin invisible function application theta equals blank 1 divided by 100
    Component o weight down the inclined plane
    F equals m g sin invisible function application theta equals 100 cross times 9.8 cross times 1 divided by 100 equals 9.8 blank N
    s equals distance moved = 10 m
    W equals F blank s equals 9.8 cross times 10 equals 98 blank J

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