Which of the following statements about the instantaneous axis (passing through the centre of mass) is correct? (A) It is vertical for both the cases (a) and (b) (B) It is vertical for case (a); and is at 45° to the x-z plane and lies in the plane of the disc for case (b). (C) It is horizontal for case (a); and is at 45° t o the x-z plane and is normal to the plane of the disc for case (b). (D) It is vertical for case (a); and is 45° to the x-z plane and is normal to the plane of the disc for case (b).

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

 

 

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