Question

The following are the names of some of the well-known forces

A. gravitational force
B.muscular force
C. magnetic force D. frictional force
Out of these, the 'contact forces' are the forces labelled as-
A and B
B and C
B and D
C and D​

Answer 1

Answer:

B and D.

Explanation:

gravitational force and magnetic force are non-contact forces.

Answer 2

Explanation:

B and D......................