Balanced and Unbalanced Forces

Assertion: If the resultant force acting on a body is zero, then body is in equilibrium.

Reason: Resultant force on a body is equal to algebraic sum of all forces acting on the body.

When balanced forces act on a body, the body :

A train pulls some carriages. The train exerts a force of $40000 \mathrm{N}$ and frictional forces act in the opposite direction with a force of $35000 \mathrm{N}$. The total mass of the train and carriages is $200000 \mathrm{kg}$. What is the acceleration of the train?

When an unbalanced force acts on a vehicle, which of these quantities changes?

A motorbike accelerates with a force of $1500 \mathrm{N}$. It experiences air resistance, which acts in the opposite direction with a magnitude of $1200 \mathrm{N}$. Calculate the unbalanced force that acts on the motorbike.

Following question contain four steps. Fill in the blank on right side according to left side step.

Pressure : Pascal :: Force : _____

Attraction force applied by earth on all the bodies. (gravitational force/electromagnetic force)

Force has magnitude but no direction.

Name two forces acting on a toy car being pulled by a child.

While riding a bicycle, if we stop pedalling, why does the bicycle begin to slow down?

An unbalanced force acts on an object. List the possible effects that will be caused in motion of the object.

State the meaning of balanced forces.

Name the physical quantity which changes the shape of a ball.

Why is it difficult to balance our body on stepping on a banana peel?

Name any two forces acting on a moving car.

What is the net value of all balanced forces acting on a body?

Why does a rolling football come to rest after some time?

If the forces in the cases given below are balanced, then find the magnitude and direction of each force:

If the forces in the cases given below are balanced, then find the magnitude and direction of each force:

Define unbalanced force. Give one example.