Balanced and Unbalanced Forces MCQs

Q1. A crate is pushed from one side by Rohan with 60 N and from the directly opposite side by Sameer with 25 N. What is the magnitude of the net force on the crate?

• A.60 N
• B.85 N
• C.35 N
• D.0 N

Answer: C. 35 N

The two forces act along the same line in opposite directions, so the net force is their difference: 60 N - 25 N = 35 N. Because the forces are unequal the force is unbalanced.

Q2. a worker shoves a trolley eastward with 90 N while a helper pushes it westward with 40 N along the same line. How large is the resultant force acting on the trolley?

• A.90 N
• B.130 N
• C.50 N
• D.0 N

Answer: C. 50 N

The two forces act along the same line in opposite directions, so the net force is their difference: 90 N - 40 N = 50 N. Because the forces are unequal the force is unbalanced.

Q3. On a loaded sledge, one man applies 120 N to the right and a second man applies 70 N to the left. What single net force does the loaded sledge experience?

• A.120 N
• B.190 N
• C.0 N
• D.50 N

Answer: D. 50 N

The two forces act along the same line in opposite directions, so the net force is their difference: 120 N - 70 N = 50 N. Because the forces are unequal the force is unbalanced.