Physics, 18.10.2019 00:20 shawn6597

Amass m = 10 kg rests on a frictionless table and accelerated by a spring with spring constant k = 5029 n/m. the floor is frictionless except for a rough patch. for this rough path, the coefficient of friction is μk = 0.49. the mass leaves the spring at a speed v = 3.4 m/s. 1) how much work is done by the spring as it accelerates the mass?
2) how far was the spring stretched from its unstreched length?
3) the mass is measured to leave the rough spot with a final speed vf = 1.5 m/s.
how much work is done by friction as the mass crosses the rough spot?
4)what is the length of the rough spot?
5) in a new scenario, the block only makes it (exactly) half-way through the rough spot. how far was the spring compressed from its unstretched length?
6)in a new scenario, the block only makes it (exactly) half-way through the rough spot. how far was the spring compressed from its unstretched length?

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Amass m = 10 kg rests on a frictionless table and accelerated by a spring with spring constant k = 5...

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