Two forces having magnitude 3.5N and 5.5N are acting on a body. Which one of the following can not be the resultant of their possible sum:
Correct answer: A. 1.5N
- A. 1.5N
- B. 2.5N
- C. 4.5N
- D. 6.5N
Explanation
Since there are 2 forces, the minimum resultant force is when they are pointing in opposite directions i.e. they are at 180° to each other. In this case, the resultant force will be 5.5 - 3.5 = 2N. For the maximum resultant force, both forces must be pointing in the same direction i.e. 0° between each other. In this case, the resultant force will be 5.5 + 3.5 = 9N. Therefore, at any angle, the resultant force R will always be 2 ≤ R ≤ 9. Hence, A is correct since it falls outside this range.
Last updated
About Addition of Vectors
Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
Practise Vectors and Equilibrium
431 free Vectors and Equilibrium MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2 vectors A and B are acting as shown in figure A = B =10N then resultant is?
A boat is sent across a river with a velocity of 8 km/h if the resultant velocity of the boat is 10 km/h, the river is flowing with the velocity of:
A body can be in translational equilibrium yet still start rotating if
A body in equilibrium__________________?
A body will be in complete equilibrium when it is satisfying______________?