A participant in a winter sporting event pulls a 49 kg brick of ice in the positive horizontal direction with a cable over his shoulders across a frozen lake as shown in the figure. Assume the coefficients of static and kinetic friction are µ,=0.1 and µ=0.03. (a) Calculate the minimum force F he must exert to get the brick sliding in newtons. (b) What is its acceleration in m's³ once it starts to move, if that force is maintained? 25°
A participant in a winter sporting event pulls a 49 kg brick of ice in the positive horizontal direction with a cable over his shoulders across a frozen lake as shown in the figure. Assume the coefficients of static and kinetic friction are µ,=0.1 and µ=0.03. (a) Calculate the minimum force F he must exert to get the brick sliding in newtons. (b) What is its acceleration in m's³ once it starts to move, if that force is maintained? 25°
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Transcribed Image Text:A participant in a winter sporting event pulls a 49 kg brick of ice in the positive
horizontal direction with a cable over his shoulders across a frozen lake as shown in the figure.
Assume the coefficients of static and kinetic friction are µ,=0.1 and µ=0.03.
(a) Calculate the minimum force F he must exert to get the brick sliding in newtons.
(b) What is its acceleration in m's³ once it starts to move, if that force is maintained?
25°
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