Lecturer and Coach (School Edu. Dept.) Comp. The work done by a force is calculated as W = F · d = |F||d|cosθ, where θ is the angle between the force and displacement vectors. - If the force is in the direction of displacement (θ = 0°), work done is positive. - If the force is opposite to the direction of displacement (θ = 180°), work done is negative. - If the force is perpendicular to the displacement (θ = 90°), work done is zero. The question requires mapping these conditions to the labels (A), (B), and (C) in Column I.
In each of the case in Column-I, a force F is acting on an object of mass m. The direction of displacement is from West to East shown by longer arrow. Match the Column-I and Column- II and choose correct option : Column-I Column-II (Force on an Object) (Work done by Force F) (A) (i) Positive (B) (ii) Negative (C) (iii) Zero Codes : (A) (B) (C) (1) (i) (ii) (iii) (2) (i) (iii) (ii) (3) (ii) (iii) (i) (4) (iii) (i) (ii) (5) Question not attempted
Asked in Exam 2024 Group d 2024 · Topic: Mechanics (Work, Energy, and Power)
More Physics questions
- The work done to increase the velocity of a car of mass 1000 kg from 36 km/h to 54 km/h is
- In following three cases A, B and C, the force F is acting on object of mass m (as shown in figure). The direction of displacement is shown by longer arrow. The work done in cases A, B and C will be respectively -
- A mass of 10 kg is at a point A on a table. It is moved to a point B, 2 m apart from A. If A and B lies on some horizontal line, the work done on the object by the gravitational force will be - (1) 20 J (2) 10 J (3) 5 J (4) Zero
- Which of the following bodies has the largest Kinetic Energy? Mass m and Speed v Mass 3m and Speed 2v Mass 2m and Speed 3v Mass m and Speed 4v
- Find the derivative of $x^x$. - $x^{(1+\ln x)}$ - $\ln x \cdot x$
- Motion under Gravity 560. Find the derivative of $x^x$.
- When velocity is doubled, kinetic energy becomes :
- The law of conservation of energy says
