Answer: (A).The net force in the y-direction will be zero.
Explanation:
Given that,
Gravitational force = 600 N
Frictional force = 25 N
Pulled by the Force = 250 N
We know that,
The gravitational force in downward and normal force act in upward. the frictional force in left side and the box pulled by the force to the right side.
The balance equation is along y-axis
The box will not move in y-axis therefore, the net force in the y-axis will be zero.
Hence, The net force in the y-direction will be zero.
Answer:
The mass of the water on earth is
Explanation:
Given that,
Average depth h= 0.95 mi
Radius of earth
Density = 1000 kg/m³
We need to calculate the area of surface
Using formula of area
Put the value into the formula
We need to calculate the volume of earth
Put the value into the formula
Now, 70 % volume of the total volume
We need to calculate the mass of the water on earth
Using formula of density
Put the value into the formula
Hence, The mass of the water on earth is
Answer:
250 N
433 N
Explanation:
N = Normal force by the surface of the inclined plane
W = Weight of the block = 500 N
f = static frictional force acting on the block
Parallel to incline, force equation is given as
f = W Sin30
f = (500) Sin30
f = 250 N
Perpendicular to incline force equation is given
N = W Cos30
N = (500) Cos30
N = 433 N
