Muscular force is a contact force.

Frictional force always acts in the opposite direction to the direction of motion of body. Why?

Name two broad categories of forces.

Define muscular force and mechanical force with examples.

Why is it difficult to walk on a smooth floor?

Explain the concept of muscular force.

Gravitational force is related to weight. List some points to justify this statement.

Write the force with which the earth attracts the objects towards it.

Electric force attracts tiny bits of paper. Explain by an activity and write your observations.

Give one use of spring balance.

Explain in brief about muscular force along with the help of an example.

Name three important disadvantages of friction.

Explain the situation when does the repulsion occur for two charges.

Name the force which always opposes motion.

Explain and demonstrate the effect of electrostatic force.

If you are pushing an object, then what actually it means?

How many types of non-contact forces are available? Give the names.