A brass block of mass m resting on a horizontal frictionless surface is given a horizontal acceleration of 5.00 m/s2 by a force of 10.0 N.

Question

A brass block of mass m resting on a horizontal frictionless surface is given a horizontal acceleration of 5.00 m/s2 by a force of 10.0 N. (a) What is the mass of the block? (b) What is the weight of the block?

Answer 1

Use Newton's 2nd law.

 

m = F/a

 

F = 10.0 N

a = 5.00 m/s²

 

Plug in the numbers and get m in kg.

 

W = weight

 

W = mg

 

g = 9.8 m/s²

 

Plug in the numbers and get W in newtons.