Explore BrainMass

# Mechanic Principle Of Energy

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

A 9kg mass on a slope which is at an angle of 15 degrees is attached via a an inextensible string over a fixed, frictionless pulley to a 5kg mass. The 9kg mass is initially moving up the slope at a rate of 1.5 m/s. How far has the mass traveled when it comes to a stop and what will its velocity be when it has then slid back down the slope a distance of 3m?

© BrainMass Inc. brainmass.com December 15, 2020, 5:04 pm ad1c9bdddf
https://brainmass.com/math/discrete-optimization/mechanic-principle-energy-276447

#### Solution Preview

Weights (mg) of the two masses act downwards as shown in the fig. Weight of the 9 kg mass has been resolved into components perpendicular and parallel to the inclined plane.
T is the tension in the string.

Net force acting on the 9 kg block ...

#### Solution Summary

Mechanic principles of energy is embodied.

\$2.19