A cubical block of ice of maas m and edge L is placed in a large tray of maas M. If the ie melts, how far does the centre of maas of the system 'ice plus tray' come down?A. `(mL)/((m + M))`B. `(mL)/(2(m + M))`C. `(mL)/(M)`D. `(ML)/(m)`

A cubical block of ice of maas m and edge L is placed in a large tray

1.	A cubical block of ice of maas m and edge L is placed in a large tray of maas M. If the ie melts, how far does the centre of maas of the system 'ice plus tray' come down?A. `(mL)/((m + M))`B. `(mL)/(2(m + M))`C. `(mL)/(M)`D. `(ML)/(m)`
Answer» Correct Answer - B `(y_(c.m.))_(1) = (m (L)/(2) + M xx 0)/(m + M) = (m L)/(2( m + M))` When ice becomes water , as tray is large , the height of water is negligible `(y_(c.m.))_(2) = 0` Shift `= (y_(c.m.))_(1) - (y_(c.m.))_(2) = (mL)/(2(m + M))`

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A cubical block of ice of maas m and edge L is placed in a large tray of maas M. If the ie melts, how far does the centre of maas of the system 'ice plus tray' come down?A. `(mL)/((m + M))`B. `(mL)/(2(m + M))`C. `(mL)/(M)`D. `(ML)/(m)`

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