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CBSE Class 9 Answered

Find the value of H
Asked by Shivam Saxena | 25 Aug, 2010, 06:38: PM
answered-by-expert Expert Answer
When the box is pushed by the force H then,
 
H - F = mxa           
where, F = Friction force acting in direction opposite to the motion
         a = acceleration = 0 m/s2
        m = mass of the box = 50 Kg.
therefore,
H = F..................(i)
 
Now when the box is pushed by 1.5H then,
 
1.5H - F = mxa1
 
a1 = Acceleration = 0.1 m/s2
 
From (i) we get,
1.5H - H = 50x0.1
 
ie, 0.5H = 5
thus, H = 10 N.
 
Team,
Topper Learning
Answered by | 26 Aug, 2010, 02:58: PM

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