90⁰<θ ≤ 180⁰ হলে, বলের দ্বারা কৃতকাজ কেমন হবে?

প্রযুক্ত বল ও সরণের মধ্যবর্তী কোণ কত হলে সর্বাধিক কাজ হয়?

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 ;

You lift a suitcase from the floor and keep it on the table. The work done by you on the suitcase depends on

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.