A block of mass m = 3.00 kg situated on a rough incline at an angle of = 37.0° is connected to a spring of negligible mass having a spring constant of 100 N/m. The pulley is frictionelss. The block is released from rest when the spring is unstretched. The block moves 14.5 cm down the incline before coming to rest. Find the coefficient of kinetic friction between block and incline.
2007-02-25 04:54:35 · 1 answers · asked by tnhoots 1 in Science & Mathematics ➔ Physics
I am not very good at the spring constant questions. Does anyone know of a less complicated way to answer these types of questions??
2007-02-25 04:55:14 · update #1
They usually depend on energy conservation
mgh or kx^2 or 1/2 mv^2 and work or energy loss due to friction Fx=uNx. so you figure out an energy budget and solve for the unknown
In this case you know kx^2 and you can find h so you also know mgh and the difference is due to the energy loss to friction. uNx. Resolving the components of the forces is most of the work. Draw a picture
2007-02-25 07:27:40 · answer #1 · answered by meg 7 · 0⤊ 0⤋