For a 2-D structure, if m is the number of members, j is the number of joints,

and r is the number of reaction

structure is (m= number of members & j= number of joints)

A. m+3=2j

B. m+3>2j

C. m+3<2j

D. none of these

the condition for statistical indeterminacy of

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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