Question

Static and Limiting Friction
A block is lying static on the floor. The maximum value of
static frictional force on the block is 10N. If a horizontal
force of 8N is applied to the block, what will be the
frictional force on the block
[DUMET 2009)
(a) 2N
(b) 18N
(c) 8N
(d) 10N
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Answer 1

Answer:

c) 8N

The block will only move if more than 10N force is applied. As static friction is self adjusting friction, it will apply 8N from the opposite side of the force being applied and thus frictional force will be 8N only.

Answer 2

Answer:

Explanation:

Answer:

the answer is 1.25

Explanation:

data

F=friction force

U=coefficient of force

N=normal force

solution

F=UN

U=F/N

put the values and get your answer