Question

How does the coefficient of friction chnange if mass of body is double?

Answer 1

solution:

let us prove that,

coefficient of friction(\mu)=f/n   ------(1)

where f is friction force, and the normal N =mass\times g\\

then by substituting N in the equation 1

we get,

\mu = f/m x g --------------------(2)

now we can observe from equation 2 that as the mass increases the coefficient of friction \mu will decrease. so if the mass doubled the coefficient of friction will be decrease.

Answer 2

Answer:Formal charges help in the selection of the lowest energy structure from the number of possible

Lewis structure.

Lowest energy structure is the one with a factor based on a pure covalent bond between the two

atoms.

Explanation: