A) only frictional force
B) only magnetic force
C) gravitational and magnetic forces
D) frictional and gravitational forces
Correct Answer: D
Solution :
In order to answer this question, the student must be able to recognize the various forces that act on the wooden block. Since the wooden block is not made of a magnetic material, it does not experience any magnetic force. Frictional force arises when two bodies move in contact with each other. Since the surface of the wooden block is rough, the block experiences a frictional force, as shown in the following figure.You need to login to perform this action.
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