$300\, J$ of work is done in sliding a $2 kg$ block up an inclined plane of height $10 \,m$. Taking $g=10\, m / s ^{2}$, work done against friction is :
- 200 J
- 100 J
- zero
- 1000 J
The Correct Option is B
Solution and Explanation
Top Questions on work
- A man drags a block through $10\, m$ on rough surface $(\mu = 0.5)$. A force of $\sqrt{3}$ kN acting at $30^{\circ}$ to the horizontal. The work done by applied force is
- The work done by a given force on a body depends only on
- The diagram shows a barrel of weight $ {1.0 \times 10^{3} \,N}$ on a frictionless slope inclined at $30?$ to the horizontal. The force -is parallel to the slope. What is the work done in moving the barrel a distance of $5.0 \,m$ up the slope?
- The particle of mass $50\, kg$ is at rest. The work done to accelerates it by $20\,m/s$ in $10\,s$ is
The angle between the vectors \(\overrightarrow {A} = \hat{i} + \hat{j}\) and \(\overrightarrow {B} = \hat{i} + \hat{j} + c\hat {k}\) is 30o.Find the unknown \(c\) .
Questions Asked in AFMC exam
- 1200 ml of air remaining in lungs even after forceful expiration is
- AFMC - 2012
- Exchange Of Gases
- A dicot plant in which scattered vascular bundles are present in stem is
- AFMC - 2012
- Anatomy of Flowering Plants
- Which plays an important role in the dispersal of spores in Funaria?
- AFMC - 2012
- Kingdom Plant
- Sexual reproduction in eubacteria takes place by
- AFMC - 2012
- Kingdom Monera
- Which of the following acid is also a vitamin?
- AFMC - 2012
- Digestion and absorption
Concepts Used:
Work
Work is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.
Work Formula:
W = Force × Distance
Where,
Work (W) is equal to the force (f) time the distance.
Work Equations:
W = F d Cos θ
Where,
W = Amount of work, F = Vector of force, D = Magnitude of displacement, and θ = Angle between the vector of force and vector of displacement.
Unit of Work:
The SI unit for the work is the joule (J), and it is defined as the work done by a force of 1 Newton in moving an object for a distance of one unit meter in the direction of the force.
Work formula is used to measure the amount of work done, force, or displacement in any maths or real-life problem. It is written as in Newton meter or Nm.