Answer:
<em>The force that would be applied on the rope just to start moving the wagon is 122 N</em>
Explanation:
Frictional force opposes motion between two surfaces in contact. It is the force that must be applied before a body starts to move. Static friction opposes the motion of two bodies that are in contact but are not moving. The magnitude of static friction to overcome for the body to move can be calculated using equation 1.
F = μ x mg .............................. 1
where F is the frictional force;
μ is the coefficient of friction ( μs, in this case, static friction);
m is mass of the object and;
g is the acceleration due to gravity( a constant equal to 9.81 m/)
from the equation we are provide with;
μs = 0.25
m = 50 kg
g = 9.81 m/
F =?
Using equation 1
F = 0.25 x 50 kg x 9.81 m/
F = 122.63 N
<em>Therefore a force of 122 N must be applied to the rope just to start the wagon.</em>
Answer:
yes there will be change in its density
<span>The Earth’s climate warmed over the last 100 years beyond 1°, although it is not still arrived at 1.1°. Only one grade can be perceived as a small warm, but the repercussions are catastrophic, because of the inertia possessed by the physics mechanisms that are regulating our planet. In order to apply fully the Paris Agreement, we should keep the warm well under 2°, aiming to keep it under 1.5°.</span>