What forces do we know about?

• Force of gravity:

  • Force = G m1 m2 / R2
  • Force on mass m near surface of earth F = G m mearth / Rearth2 = m g g = G mearth / Rearth2
    
    

• Force of due to a spring:

  • Force F = - K x
    
    

• Force of due to contact

  • What transmits the force? This was an open question in the 1700’s. What do you think?
    
    

• Other?

F

x

Previous slide

Next slide

Back to first slide

View graphic version