PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
A 4kg block rests on a horizontal surface (μs=0.25). A person presses vertically downward on the block with a force of 20N. What is the largest horizontal pull that can be applied without causing the block to slide?
(a) 15N
(b) 9.8N
(c) 14.8N
(d) 10N