A 2.6 N block is at rest on a horizontal surface. A 0.9 N upward force is applied to the block by means of attached vertical string.
(a) What is the magnitude of the force of the block on the horizontal surface?
mg-forceapplied is the normal force.
To find the magnitude of the force of the block on the horizontal surface, we need to consider the forces acting on the block.
There are two forces acting on the block: the applied force of 0.9 N in the upward direction and the force of gravity acting on the block in the downward direction. The force of gravity can be calculated using the formula:
Force of gravity = mass of the block * acceleration due to gravity
Now, the weight of the block can be found using the formula:
Weight = mass of the block * acceleration due to gravity
Since weight is a force and force is measured in Newtons (N), we can write:
Weight = mass of the block * acceleration due to gravity = 2.6 N
We also know that the upward force applied to the block is 0.9 N.
To find the force exerted by the block on the horizontal surface, we need to subtract the applied force from the weight:
Force of the block on the horizontal surface = Weight - Applied force
Substituting the given values, we have:
Force of the block on the horizontal surface = 2.6 N - 0.9 N = 1.7 N
Therefore, the magnitude of the force of the block on the horizontal surface is 1.7 N.