Questions
A ladder of mass 10kg is lying on horizontal surface. A body of weight 200N is attached to one end of ladder. If length is 5m and its centre of mass is at a distance of 2m from one end, the total work done in lifting the ladder to vertical position is
detailed solution
Correct option is D
W=Wload+WbodyW=mlghl+mbghbW=[10×10×2]+[200×5]W=200+1000⇒W=1200JTalk to our academic expert!
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If W1, W2 and W3 represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively (as shown) in the gravitational field of a point mass m, find the correct relation between W1, W2 and W3
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