A block attached to an ideal horizontal spring is pulled to the right and released…
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
A block attached to an ideal horizontal spring is pulled to the right and released from rest on a rough horizontal table. At the instant the block reaches its maximum rightward stretch, its instantaneous velocity is zero but it is about to accelerate toward the left. What frictional force does the table exert on the block at that instant?
(a) Kinetic friction directed toward the left
(b) No frictional force because the block is momentarily at rest
(c) Static friction directed toward the right
(d) Static friction directed toward the left