1 / 7

Newton’s Second Law of Motion

Newton’s Second Law of Motion. And it states …. The acceleration of an object will be in the same direction and directly proportional to the net force applied. The acceleration will be inversely proportional to the mass of the object.

kalb
Download Presentation

Newton’s Second Law of Motion

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Newton’s Second Law of Motion

  2. And it states … • The acceleration of an object will be in the same direction and directly proportional to the net force applied. • The acceleration will be inversely proportional to the mass of the object. • So, the harder you push something, the faster it accelerates. • And the more massive an object, the harder it is to accelerate.

  3. Back to mass, volume and weight • Mass is the amount of matter in an object (its inertia) • Volume is the size • Weight is the force of gravity on your body (mass and the acceleration due to gravity) • Don’t forget the difference between these!

  4. Mathematically writing this law • F = m a (force = mass x acc.) • units- ( N = kg x m/s2) • You may see this written as… • F = m a •  (Greek letter sigma) means “the sum of” in math • So it means “net force”

  5. So to calculate weight… • F = m a • Fw = m g • g is still 9.8 m/s2 sea level on Earth. • Metrically weight is always reported in newtons. • And don’t forget to keep your mass in kg.

  6. 1 kg (2.2 lbs) = 20 kg (44 lbs) = 60 kg (132 lbs) = 80 kg (176 lbs) = 102 g = 9.8 N 196 N 588 N 784 N 1 N Getting used to newtons Calculate the weight of … (ignore sig figs for a sec)

  7. Weight Problem • How much would a 68 kg person on Earth weigh on the moon (g = 1.47 m/s2)? on Jupiter (g = 26.5 m/s2)? • 100 N on the moon, 1800 N on Jupiter

More Related