352014 phys 2010 center of mass for sphere middle 13

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: prise, surprise !! Gravita>onal force on an object on the surface of the Earth! 3/5/2014 PHYS- 2010 10 Who does the force act on? m1 = 70 kg m2 = 70 kg r = 1 meter −7 | F | gravity = 3.3 × 10 Newtons Answer = Both – Newton’s 3rd law! Person #1 exerts a force on Person #2 Person #2 exerts a force on Person #1 3/5/2014 PHYS- 2010 11 Room Frequency BA Clicker Ques:on Yoda is standing on the surface of the planet Dagobah. Dagobah exerts a gravita>onal force FDagobah on Yoda, and Yoda exerts a gravita>onal force FYoda on Dagobah. Strong is the Force with me! Which of the following is correct: A)  FDagobah > FYoda B)  FDagobah < FYoda Newton’s Third Law! C)  FDagobah = FYoda D)  It’s not so simple, we need more informa>on. 3/5/2014 PHYS- 2010 12 Extended Objects Objects are extended in space. Newton’s Law of Universal Gravita>on is based on compu>ng the distance between two objects, but which distance? RCM In fact, every part of object #1 exerts a gravita>onal a^rac>on on every part of object #2, and vice versa. When adding all vector components, we treat the force as ac>ng between the “center of mass” of each object. 3/5/2014...
View Full Document

This document was uploaded on 03/09/2014 for the course PHYSICS 2010 at Colorado.

Ask a homework question - tutors are online