A contestant in a winter games event pushes a 47.0 kg block of ice across a frozen lake as shown in the figure below. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (Assume θ = 31∘.) (a) Calculate the minimum force F (in N) he must exert to get the block moving. N (b) What is its acceleration (in m/s2 ) once it starts to move, if that force is maintained? m/s2

A contestant in a winter games event pushes a 47.0 kg block of ice across a frozen lake as shown in the figure below. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (Assume θ = 31∘.) (a) Calculate the minimum force F (in N) he must exert to get the block moving. N (b) What is its acceleration (in m/s2 ) once it starts to move, if that force is maintained? m/s2

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A contestant in a winter games event pushes a 47.0 k g block of ice across a frozen lake as shown in the figure below. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03 . (Assume θ = 31 .) (a) Calculate the minimum force F (in N ) he must exert to get the block moving. N (b) What is its acceleration (in m / s 2 ) once it starts to move, if that force is maintained? m / s 2

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