# Search results

1. ### Kinetic friction on incline/flat surface system

Homework Statement http://nplq1.phyast.pitt.edu/res/msu/physicslib/msuphysicslib/13_EnergyConservation/graphics/prob27a_MechEnWFriction.gif When mass M is at the position shown, it is sliding down the inclined part of a slide at a speed of 2.07 m/s. The mass stops a distance S2 = 1.9 m...
2. ### System of masses over a pulley

Homework Statement http://nplq1.phyast.pitt.edu/res/msu/physicslib/msuphysicslib/09_Force_and_Motion/graphics/prob69_2blkplly.gif Two blocks are arranged as shown. The pulley can be considered to be massless, and friction is negligible. M1 is four times more massive than M2. If the...
3. ### A particle leaves the origin (motion in 2 dimensions)

Homework Statement A particle leaves the origin with an initial velocity v = 3.92i , in m/s. It experiences a constant acceleration a = -1.00i -0.80j , in m/s2. What is the velocity of the particle when it reaches its maximum x coordinate? i-component of velocity? j-component of the...
4. ### Electric Field and Charge Density

Homework Statement A line of charge starts at x=+x_0 and extends to positive infinity. If the linear charge density is \lambda=\frac{\lambda_0x_0}{x}, determine the electric field at the origin. The Attempt at a Solution I'm really not sire which equations I would have to use to solve...
5. ### Density of a planet using orbit of a satellite

[SOLVED] Density of a planet using orbit of a satellite Homework Statement A satellite is in a circular orbit about a planet of radius R. If the altitude of the satellite is h and its period is T, show that the density of the planet is \rho=\frac{3\pi}{GT^2}(1+\frac{h}{R})^3 The...
6. ### Energy required to place a satellite in orbit

[SOLVED] Energy required to place a satellite in orbit Homework Statement A 200-kg satellite is placed in Earth orbit 200 km above the surface. What is the minimum energy necessary to place this satellite in orbit (assuming no air friction)? The Attempt at a Solution To solve this...
7. ### Simple harmonic motion and friction

Homework Statement A large block P executes horizontal simple harmonic motion by sliding across a frictionless surface with a frequency f = 1.5 Hz. Block B rests on it, and the coefficient of static friction between the two is \mu_s=0.60. What maximum amplitude of oscillation can the system...
8. ### Potential energy of a pendulum when the angle is small

[SOLVED] Potential energy of a pendulum when the angle is small Homework Statement When a simple pendulum makes an angle with the vertical, its speed is v. (a) Calculate the total mechanical energy of the pendulum as a function of v and \theta. (b) Show that when \theta is small, the...
9. ### Static Equlibrium involving a weird object

Homework Statement A uniform beam of weight w is inclined at an angle \theta to the horizontal with its upper end supported by a horizontal rope tied to a wall and its lower end resting on a rough floor. (a) If the coefficient of static friction between the beam and floor is \mu_s, determine...
10. ### Rolling motion including torque and acceleration

Homework Statement A constant horizontal force \vec{F} is applied to a lawn roller in the form of a uniform solid cylinder of radius R and mass M. If the roller rolls without slipping on the horizontal surface, show that (a) the acceleration of the center of mass is \frac{2\vec{F}}{3M} and (b)...
11. ### Angular momentum and collisions

[SOLVED] Angular momentum and collisions Homework Statement A wooden block of mass M resting on a frictionless horizontal surface is attached to a rigid rod of length \ell and of negligible mass. The rod is pivoted at the other end. A bullet of mass m and travelling parallel to the...
12. ### Angular momentum about a point

[SOLVED] Angular momentum about a point Homework Statement A ball having mass m is fastened at the end of a flagpole that is connected to the side of a tall building at point P. The length of the flagpole is l, and it makes an angle of \theta with the horizontal. If the ball becomes loose and...
13. ### Conservation of Angular Momentum of Turntable

[SOLVED] Conservation of Angular Momentum Homework Statement A 60-kg woman stands at the rim of a horizontal turntable having a moment of inertia of 500 kgm^{}2 and a radius of 2.00 m. The turntable is initially at rest and is free to rotate about a frictionless, vertical axle through its...
14. ### The speed of a bullet may be determined by allowing the bullet to pass throu

[SOLVED] The speed of a bullet may be determined by allowing the bullet to pass throu Hello! I am new here and this is my first time posting...I am working on a physics problem and I have been stumped on it for a while now. Any hints would be greatly appreciated. Homework Statement The...