Recent content by chouZ

The other way I did it...I don't need the length of the spring nor the distance the mass is pulled down; numerical values given in the problem...Whoever try this, did u have to use those values?

A fluid mass is rotating at constant angular velocity, w, about the central vertical axis of a cylindrical container. The variation of pressure in the radial direction is given by: dP/dR= (density)*w^2*R Show that the liquid surface is a paraboloidal form; that is a vertical cross section of...

A mass of 0.100 kg is supported in equilibrium by two identical springs of negligible mass having spring constants k= 0.050 N/m. In the equilibrium position, the springs make an angle of 30 degree with the horizontal and are 0.100 m in length. If the mass, m, is pulled down a distance of 0.020 m...

Homework Statement Planet Zero has a mass of 4.0*10^23 kg and a radius of 2.0*10^6 m . With what kinetic energy should a 10-kg space probe be launched vertically from the surface of Zero so as to achieve a maximum distance of 4.0*10^6 m from Zero's center? The Attempt at a Solution I...

Net force= forces applied on the axis of the displacement

make a body diagram and it will be more clear. Net force of the forces in the direction of the displacement equal the product of mass and acceleration. Solve for Fapp..

thanks for the help guys...

got it...thanks for the help!

still a lit bit confused...the change in height..how can u calculate it? I mean I thought about it: the height h between the position of the center of mass initially and its position at the final moment...but i can find a way to find the answer...

Homework Statement A 2.0-kg block starts from rest on the positive x-axis 3.0 m from the origina and thereafter has an acceleration given by a = 4i-3j. The torque, relative to the origin acting on it at the end of 2.0 s is: Homework Equations linear acceleration= (radius)(angular...

Homework Statement A nonuniform 2-0 kg rod is 2.0 m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that passes through one end of the rod. The moment of inertia of the rod about this axis is 4.0 kg.m2. The center of mass of the rod is 1.2 m from the...