Answer to Question #192051 in Mechanics | Relativity for Nicole

Question

A block with an unknown mass is being pushed on by a force equal to F = 260 N, applied to the box at an angle 20 degrees from horizontal. There is significant friction between the block and the surface, which prevents the box from sliding.

The magnitude of the force of static friction acting on the block is most nearly…

(A) 89 N

(B) 244 N

(C) 260 N

(D) It cannot be determined

Answer 1

Let the friction force be f

$f= 260cos20^\circ$

Hence, f = 244.32N