Question

Nancy is hauling a toy car of mass 4kg which was at rest earlier on the floor. If 50N is
the value of the static frictional force then, calculate the friction coefficient.
(A) 1.25 (B) 1.7 (C) 0.5 (D) 1.4​

Answer 1

Answer:

option A is correct

Explanation:

let friction coefficient be k

mass of toy = 4kg

normal force(N)= mg

N= 4×9.8= 39.2N

here for statical frictional force =50N

50=k×39.8

k=1.2562

k=1.25 ( approx)

If you put g=10m/s2

then you get k=1.25 exact

Answer 2

I think the answer is A