A light horizontal spring has a spring constant of 105 N/m. A 2.00 kg block is pressed against one end of the spring, compressing the spring 0.100 m. After the block is released, the block moves 0.250 m to the right before coming to rest. What is the coefficient of kinetic friction between the horizontal surface and the block?
2006-12-01 17:25:55 · 2 answers · asked by nick n 1 in Science & Mathematics ➔ Physics
uk=Fk/Fn
=(210)/(19.62)
=sorry dont have a calculator..ps no units causeN/N
Fk=ma...newtons 2nd law
=(2)(105) N/m is the same as m/s2
=210
Fn=Fg
Fg=mg
=(2)(9.81)
=19.62
o think the rest of the information is irrelevant...this is gr 11 physics right?
2006-12-01 17:37:58 · answer #1 · answered by Anonymous · 2⤊ 2⤋
Calculate the amount of energy stored in the spring and equate it to the energy of moving the block against the force of friction.
2006-12-01 17:35:13 · answer #2 · answered by modulo_function 7 · 0⤊ 0⤋