Question
A box is pushed through 4.0m across a floor offering 100N resistance. How much work is done by the resisting force?
✓
Answer
$\text{F}=100\text{N}$$\text{S}=4\text{m},\theta=0^\circ$
$\omega=\vec{\text{F}}.\vec{\text{S}}$
$=100\times4=400\text{J}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If someone presses a pointed needle against your skin, you are hurt. But if someone presses a rod against your skin with the same force, you easily tolerate. Explain?
What will be the effect on the period of oscillation if a soft spring of the same length is used in place of a hard spring?
There are equal number of molecules of hydrogen and oxygen in a box. If a tiny hole is made in the box, which gas will leak out rapidly and why?
What is the relationship between the total energy and oscillation frequency of a simple pendulum?
What is the phase difference between two successive crests in a transverse wave?
Can we define specific heat capacity at constant temperature?
Is the existence of a dimensionless and unitless physical quantity possible?
Suppose we define a quantity 'Linear Pomentum' as linear pomentum = mass × speed. The linear pomentum of a system of particles is the sum of linear pomenta of the individual particles. Can we state a principle of conservation of linear pomentum as ''linear pomentum of a system remains constant if no external force acts on it?''
Can you, have an AG series circuit in which there is. a phase difference of 180° between the emf and the current? 120°?
What is sublimation?