Question

Sand is spread on tracks covered with snow.why?

Answer 1

◆When tracks or roads are covered with snow, they have negligible friction and that's why it is impossible to walk or drive the vehicles. When sand is thrown on tracks, force of friction is increased..

Answer 2

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★Covering of snow laid tracks with sand increases the force of friction between the road and the wheels. Therefore, chances of slipping skidding reduce.