daalongisland.blogg.se - Dinesh mcq physics pdf

This postulate is known as the law of inertia.

Newton’s first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by force.

The correct answer is Newton's first law.

θ = angle between velocity and magnetic field vectors.

The force is perpendicular to both the velocity v of the charge q and the magnetic field.

It is the attraction or repulsion that arises between electrically charged particles because of their motion.

It is any force applied by using our muscles like arms or legs.

G is the Universal Gravitational Constant with a value of 6.674 × 10 -11 Nm 2kg -2.

Gravitational Force = Gm 1m 2/r 2 is the Gravitational force between two objects measured in Newton (N).

Hence, the closer objects are to each other, the stronger their gravitational pull is.

Gravity also gets weaker with distance.

Objects with more mass have more gravity.

It is the force by which a planet or other body draws objects toward its center.

It is a force that attracts any objects with mass.

Frictional Forces are primarily classified into four different types.

The formula for frictional force is given by F = μN.

The frictional forces are majorly affected by the texture of the surface of the objects that came in contact with each other and the amount of force exerted on them.

It is the opposing force when two surfaces come in contact with each other to move either in the same direction or in opposite directions.

Friction between water and the boat brings it to a stop once you stop rowing.The force responsible for changing the state of motion of objects is Force of friction. A boat comes to rest if we stop rowing.