There is a box weighing 20 kg on the floor. What work must be done to raise the box to a height of 150 cm?

Data: m (weight of the box standing on the floor) = 20 kg; h (height to which you want to raise the box) = 150 cm (1.5 m).

Constants: g (acceleration due to gravity) = 9.81 m / s2.

The work that will need to be done to raise the box by 150 cm will be equal to the change in its potential energy: A = En = m * g * h.

Let’s perform the calculation: A = 20 * 9.81 * 1.5 = 294.3 J.

Answer: To lift the box to a height of 150 cm, it is necessary to perform work of 294.3 J.

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' );