MDCAT Physics — Vectors and Equilibrium
Vectors and Equilibrium is a core Physics topic in the PMDC MDCAT syllabus, covering 4 subtopics. Below are the subtopics to revise, how often the topic appears in past papers, and real past-paper MCQs to try.
Subtopics (4)
- Addition of Vectors (Rectangular Components)
- Conditions of Equilibrium
- Torque and Moment of Force
- Vectors & Equilibrium
How Vectors and Equilibrium is tested
Across the 16 MDCAT past papers on ParhaiKrlo, Vectors and Equilibrium accounts for 8 questions. It appears in 2 of them, about 4 questions a paper. The heaviest was MDCAT 2010, with 4 questions.
| Paper | Questions |
|---|---|
| MDCAT 2010 | 4 |
| MDCAT 2009 | 4 |
Vectors and Equilibrium MCQs from the MDCAT past papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · MDCAT 2010 · Vectors and Equilibrium
For a body to be in complete equilibrium
- A.Linear acceleration is zero
- B.Angular acceleration is zero
- C.Linear acceleration is zero but angular acceleration is not zero
- D.Linear acceleration and angular acceleration both should be zero
Show answer
Answer: D. Linear acceleration and angular acceleration both should be zero — Complete equilibrium requires both zero linear acceleration and zero angular acceleration.
- Q2 · MDCAT 2009 · Vectors and Equilibrium
Unit vector in the direction of vector 2î − 4ĵ will be:
- A.(2î − 4ĵ)/√6
- B.(4î − 2ĵ)/√10
- C.(î − 2ĵ)/√5
- D.(î − 2ĵ)/√7
Show answer
Answer: C. (î − 2ĵ)/√5 — Unit vector of 2i − 4j is (2i − 4j)/|2i−4j| = (i − 2j)/√5.
- Q3 · MDCAT 2010 · Vectors and Equilibrium
If length of a spanner is ‘I’ and a force ‘F’ is applied on it to tighten a nut such that it passes through the pivot point, then torque is
- A.Zero
- B.Ff
- C.Fl sin θ
- D.Fl sin θλ
Show answer
Answer: A. Zero — If the applied force passes through the pivot point, the torque produced is zero.