Question

You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 271 N in the positive x direction to try and move the 62-kg refrigerator. The coefficient of static friction is 0.67.(a) How much static frictional force does the floor exert on the refrigerator? Give both magnitude and direction.(b) What maximum force do you need to apply before the refrigerator starts to move? N

Answer 1

weight=mg=62×9.8=607.6N down

norMal Force-weight=0

normal force-607.6=0

normal force=607.6N up

friction=Norma force× coefficient of Fs

=607.6×0.67

=407.092N in negative X axis