To prove that the frictional force is independent of the area of contact, the required materials and apparatus are

1. Whenever the surface of one body slides over another, each body exerts a certain amount of force on other body.  2. These forces are tangential to the surfaces. The force...

D) two spring balances

C) Force, Area

D) Force / area

A) 1 – c, 2 – d, 3 – e, 4 – b, 5 – a

C) distance of contact

Correct option is C) drag

A) Frictional force is dependent of the area of contact.

C) Both Uma and Usha are correct

A) Area of contact