The distance $(x)$ converted by a body of $2\ kg$ under the action of a force is related to time $t$ as $x=t^{2}/4$. What is the work done by the force in first $2$ seconds?

Water is dragged from a well of hepth 30 m using bucket of weight 50kg with water If the weight of the rope is 0.4 kg per metre, the amount of work done is ;

The force constant of a wire is k and that of another wire is $2k$When both the wires are stretched through same distance, then the work done.

একটি কণার উপর $\vec{F}=(-2 \hat{i}+3 \hat{j}+4 \hat{k}) N$ বল প্রয়োগের ফলে $Q(3,-$ $4,-2)$ বিন্দু থেকে $P(-2,3,5)$ বিন্দুতে স্থানান্তরিত হয়। বল কর্তৃক সম্পাদিত কাজের পরিমাণ কত?

The force on a particle as the function of displacement x(in x-direction) is given by $F=10+0.5x$

The work done corresponding to displacement of particle from $x=0$ to $x=2$ unit is?