Get premium membership and access revision papers with marking schemes, video lessons and live classes.
  OR
Processing. Please wait.

 Form 3 Physics Newton's laws of motion questions and answers

A block of metal with a mass of 20 kg requires a horizontal force of 50 N to pull it with uniform velocity along a horizontal surface. Calculate the coefficient of friction between the surface and the block. (take g = 10 m/s)

 (0m 0s)
1932 Views     SHARE

Answer Text:
Since motion is uniform, the applied force is equal to the frictional force
Fn = normal reaction = Weight = 20×10=200 N
Therefore, μ =FfFn =
50200=0.25.


|