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16 February, 20:15

Jamal watches his older brother Robert lift weights. the bar alone had a mass of 20 kg. on the bar he had two 11.4 kg weights two 4.5 kg weight and four 450 g weights. what mass what's Robert lifting

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  1. 16 February, 20:23
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    Total mass=20+2 (11.4) + 2 (4.5) + 4 (0.450)

    =20+22.800+9+1.800

    =53.600 kg.
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