Question

Why it is easier to skate on snow?
Is the reason is coefficient of friction is low and due to slippery?

Answer 1

1. For skating, person uses either wheeled shoes or skaters . The pressure on the ice increases. So ice melts at lower temperature.
2. As the ice under the wheel melts and converts into water, which acts as lubricant and reduces friction.
3. The person on the wheels moves rapidly forward. Then the melted ice behind solidifies due to decrease of pressure.
Conclusion: Skating is possible because melting point decreases with increase of pressure.

Answer 2

Skating is possible due to almost no friction and pressure put on ice for skating. As the skaters put on usually skate blade which has plane below surface providing almost no friction also the surface of ice acts as a lubricant reducing the friction to move on.
A skater put pressure on skate blades to move on over the ice and since there is almost no friction present between ice surface and skate blades, skater gain speed from a little push. As the pressure increases on ice temperature rises so the ice melts rapidly beneath skate blades which results in increasing speed.