Question

BOTANY
ZOOLOGY O
PHYSICS 0
CHEMISTRY O
Duration: 3:00:00 Time Left
A block rests on a horizontal surface and weighs 20 N. A horizontal tension T can be increased to 8 N before the block starts to slic
along the horizontal surface. A force of 7 N will keep the block in uniform motion once it has been set in motion. Coefficients of sta
and kinetic frictions are correctly given by
(A) 1/8, 8/7
(B) 2/8, 3/7
(C) 0.4 and 0.35
(D) 4 and 3.5​

Answer 1

Answer:

0.4, and 0.35

Option C

Formula

Mg = 20 N

uS = fs/R

8/20 =0.4

7/20 = 0.35

ᗷᗴ ᗷᖇᗩIᑎᒪY

ᗰIՏՏ ᑕᖇᗩᘔY

Answer 2

Answer:

The answer is a option C