A weightlifter holds a 150 kg weight 2 m from the floor. Calculate the speed which the weight hits the floor when dropped. You may assume that no energy leaves the system, and that the gravitational...

A weightlifter holds a 150 kg weight 2 m from the floor. Calculate the speed which the weight hits the floor when dropped. You may assume that no energy leaves the system, and that the gravitational...

Here is the intro. Radio waves are also examples of electromagnetic waves. when you listen to a radio stationm the frequency that you find on the dial describes the frequency of the waves sent out...

if yes then how do we get acceleration as 9.81

we everybody knows that there is pull of earth means gravity .then why it is so that every tree grows upward and the height of human being also grows upward?

what is the unit force used in gravity calculations And why is it called this?

1. what happens to the gravitational force between two objects if the distance between them is increased 4 times? a. increased 4 times b. increased 16 times c...

A 7kg bowling ball is raised 1.5m into the air. What is the bowling ball's gain in gravitational potential energy? SHOW WORK PLEASE! THANKS!!!!!

A planet has ? the density of earth but 2x the radius. find the surface gravitational force on this planet. (Hint: Earth’s is 10N/Kg)