Find the escape velocity ve for an object of mass m that is initially at a distance r from the center of a planet of mass m. assume that r≥rplanet, the radius of the planet, and ignore air resistance.

Atransverse wave is traveling on a string stretched along the horizontal x-axis. the equation for the vertical displacement y of the string is given by y = (1.8 x 10-3)cos[π(13x - 60t)], where all quantities are in si units. what is the maximum speed of a particle of the string

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e