Question: L. A rectangular lamina ABCD lies on a smooth surfance. The sides AB and AD measure 1.7 m and 1.4 m respectively. Honzontal forces of

L. A rectangular lamina ABCD lies on a smooth surfance. The sides AB and AD measure 1.7 m and 1.4 m respectively. Honzontal forces of 20 N, 30 N and 25 N act at [3, C and the midpoint of BC at right angles to the edges as shown in the diagram. A H 23N D C 20N MM Calculate the total moment of the three forces about A. [3]

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