Question

A wooden block rests on an inclined wooden plane. The significant forces acting on the block are (select all that apply)

A. the block's acceleration.
B. the normal force that the inclined plane exerts on the block.
C. friction.
D. air resistance.
E. the gravitational force that the inclined plane exerts on the block.
F. the gravitational force that the Earth exerts on the block.
G. the tension force that the inclined plane exerts on the block.
H. another force that is not listed here.

Answer 1

A. the block's acceleration.

There is no acceleration since block is at rest and hence all forces are in balance

B. the normal force that the inclined plane exerts on the block.

This is significant

C. friction.

This is significant

D. air resistance.

This is very small in amount and hence non significant

E. the gravitational force that the inclined plane exerts on the block.

This is very small in amount and hence non significant

F. the gravitational force that the Earth exerts on the block.

This is significant given by

F= m*g

G. the tension force that the inclined plane exerts on the block.

This is very small in amount and hence non significant

H. another force that is not listed here.

Answer: B,C,F