A 7.5 kg sled slides to the left across level ground. When we come into this problem, any pushing forces have stopped and the sled is slowing due to friction at a rate of 1.2 m/s2. Find the value of the coefficient of kinetic friction between the snow and the sled.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft

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