A contestant in a winter games event pushes a 45.0 kg block of ice across a frozen lake as shown in the figure. 25° The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (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 45.0 kg block of ice across a frozen lake as shown in the figure. 25° The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (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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Transcribed Image Text:A contestant in a winter games event pushes a 45.0 kg block of ice across a frozen lake as shown in the figure.
25°
F
The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03.
(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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