In the figure shown below, coefficient of friction between the
3 kg block and ground varies with time and force acting on the block is given by
F=5t. Then, work done by the friction force on the
2 kg block upto
5 sec, from the frame of reference of the
3 kg block is:
[Take
g=10 m/s2]
![](https://search-static.byjusweb.com/question-images/byjus/ckeditor_assets/pictures/994706/original_17.png)