Question

2. 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 C are the contact forces

Answer 2

Muscular and Frictional forces

B and D