2. Fig 2.1 shows a uniform, rectangular slab of concrete abcd standing upright on the ground. The slab has height 0.60 m, width 0.30 m and mass 18 kg. A force of 40 n acts horizontally to the left at b. (a) (i) calculate the weight w of the concrete slab.
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Answer:
w= m×g 18kg×10= 180N
Explanation:
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