What is the work of the force of gravity acting on a stone weighing 4 kg, when it falls from a height of 500 m

What is the work of the force of gravity acting on a stone weighing 4 kg, when it falls from a height of 500 m in a mountain gorge to a ledge located at an altitude of 100 m?

Task data: m (the mass of the fallen stone) = 4 kg; h1 (initial height of the stone) = 500 m; h2 (ledge height) = 100 m.

Reference values: g (acceleration due to gravity) ≈ 10 m / s2.

The work of gravity when the stone in question falls is determined by the formula: A = ΔEp = En1 – En2 = m * g * h1 – m * g * h2 = m * g * (h1 – h2).

Let’s calculate: A = 4 * 10 * (500 – 100) = 16 * 10 ^ 3 J (16 kJ).

Answer: When the stone in question fell, gravity performed a work of 16 kJ.




One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.

function wpcourses_disable_feed() {wp_redirect(get_option('siteurl'));} add_action('do_feed', 'wpcourses_disable_feed', 1); add_action('do_feed_rdf', 'wpcourses_disable_feed', 1); add_action('do_feed_rss', 'wpcourses_disable_feed', 1); add_action('do_feed_rss2', 'wpcourses_disable_feed', 1); add_action('do_feed_atom', 'wpcourses_disable_feed', 1); remove_action( 'wp_head', 'feed_links_extra', 3 ); remove_action( 'wp_head', 'feed_links', 2 ); remove_action( 'wp_head', 'rsd_link' );