Question

To get to the top of a snow-covered hill while sitting on a large inflated rubber tube, the rider and his tube, with total mass 80 kg, are pulled at a constant speed by a tow rope. Assuming that friction is negligible, how much energy is required by the tow machine to get the rider to the top of a 30-m high hill? OA. 40800) OB. 20000] O C. 17300) D. 23500)

Answer 1

in first part ,we have to lift that up to the hill to energy required is mgh.

that to the top. = mgh a) Ereagy required to lift to left that to the top. gox 30X9.8 23500 J work b) from theorem eneugy Dwork done = kinetic change in energy -mv- &mco)? xboxióx (302 lox 10 x 900 = 93

In second part use work energy theorem which says that work done = change in kinetic energy.