Question

Problem 9. You push on a 30kg object with a force of 200 N, but it refuses to move. The coefficient of static friction between the object and the floor is 0.80, what is the magnitude of the friction force on the object? Solution El = 200 N Problem 10 A flatbed truck slowly tilts its bed upward to dispose of a 95 kg box. When the tilt angle just exceeds 23°, the crate begins to slide. What is the coefficient of static friction , between the truck bed and box?

Answer 1

9)

here,

mass , m = 200 N

applied force , F = 200 N

as the magnitude of applied force is not enough to move the block

so the magnitude of static frictional force is equal to the applied force

so the magnitude of the friction force is 200 N