ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Friction demonstration. Image 1 of 2. The wooden slab is being pulled over a smooth wooden table by a newtonmeter, which measures the force required to overcome friction and move the slab. In this case, the newtonmeter shows that a force of 2.2 newtons is required. To see the effect of increasing the mass of the slab, see image A400/121.
Model release not required. Property release not required.