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# Urgent mechanics-1 question watch

1. An acrobat of mass 'm' slides down a vertical rope of height 'h'. for the first three-quarters of her descent she grips the rope with her hands and legs so as to produce a frictional force equal to five-ninths of her weight. She then tightens her grip so that she comes to rest at the bottom of the rope. Sketch a (t,v) graph to illustrate her descent ,Find the frictional force she must produce in the last quarter. If the rope is 60 m high, calculate
(a) Her greatest speed
(b) the time she takes to descend.
2. (Original post by rawanaimat)
An acrobat of mass 'm' slides down a vertical rope of height 'h'. for the first three-quarters of her descent she grips the rope with her hands and legs so as to produce a frictional force equal to five-ninths of her weight. She then tightens her grip so that she comes to rest at the bottom of the rope. Sketch a (t,v) graph to illustrate her descent ,Find the frictional force she must produce in the last quarter. If the rope is 60 m high, calculate
(a) Her greatest speed
(b) the time she takes to descend.
Have you tried anything?
3. (Original post by RDKGames)
Have you tried anything?
yes i tried alot but i couldnt solve it

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