9. Take a tray. Place a small ice cube, eraser and a rupee coin on a line at one end of the tray. Now slowly lift this end of the trays as shown in figure. Which of these three objects slides down first. Why?
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this answer is given as a suggestion:
Explanation:
ok, so I think ice slide firstly then rubber and coin because as you know at room temperature water can not stay in solid-state. it changes into its liquid state. when it is converted into a liquid that means its bond becomes weaker. so the frictional force between the surface and the object is less compared to the force between the surface and the coin, rubber. that"s the reason why it slides first. or maybe there is one more reason that the ice is the only thing that is converted into liquid and the property of liquid is to flow.
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