Question

13 ) What is the co-efficient of friction if a force of 30 N is
required to move a body of mass 35 kg (Assume 1kg=10N)?
Α) 8.57
Β) 0.082
Ο Ο Ο Ο
C) 0.0857
D) 0.0085​

Answer 1

Step-by-step explanation:

Block B rest on smooth floor means there is no friction force

friction force between A and B is

f

s

≤0.4×10×10

f

s

≤40N

it means if we apply a force less than static friction force then there is no relative motion between the block surface thus, they will move together

If force F = 30N < 40N

this means both block will move together so we will assume it a single body of mass 10+25 kg =35kg

hence acceleration of whole body is

a=F/M

a=

m

1

+m

2

F

=

35

30

=0.8571ms

−2

Answer 2

Answer:

efficient of friction if a force of 30 N is required to move a body of mass 35 kg