PHYSICS HELP PLEASE?

Posted on 2015-09-16 06:02:00 in Physics by JINNY

A contestant in a winter games event pushes a 43.0 kg block of ice across a frozen lake with a rope over his shoulder as shown in Figure 4.29(b). The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. The angles are 25 degrees.

(a) Calculate the minimum force F he must exert to get the block moving. Answer is in Newtons.

(b) What is its acceleration once it starts to move, if that force is maintained? Answer is in m/s^2.

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