Question 3 (25 points)

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The 2225-N block shown in Figure is in contact with 25° incline. The coefficient of static friction is 0.4. Just

start the block up the incline or

a. Determine the force P for impending motion up the slope

b. Determine the normal force between the block and the contact surface

C. Assuming P=0, at What angle would the block have impending motion down the slope.

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