Question

A 1.2 kg block is resting on a horizontal surface. The coefficient of static friction between the block and the surface is 0.5. What will be the magnitude and direction of the force of friction on the block when the magnitude of the external force acting on the block in the horizontal direction is
(a) 0 N ?
(b) 4.9 N ?
(c) 9.8 N ?
(not an optional question)

Answer 1

Explanation:

(a) f=0

firction is also 0

(b) f=4.9

friction is also 4.9

(c) f=9.8

friction is max 6 (only. kinetic)