Force

Here, force is applied as

• pull

• push

Which of the following is unaffected by the application of force?

• Size

• Shape

• Mass

What is the cause of friction?

• Nature of the surfaces in contact

• Weight of the objects

• Interlocking of irregularities on the two surfaces in contact

Which of the following is self adjusting?

• Rolling friction

• Static friction

• Sliding friction

Rest and motion are ____ terms.

• absolute

• relative

Fluids include

• solids, liquids and gases

• liquids only

• gases only

• liquids and gases

What is the common feature in these objects that help in reducing friction?

• Nature of medium

• Streamline body

Dry surfaces offer ____ friction than wet surfaces.

• more

• less

Identify the kind of force dipicted in the image.

• Tension

• Friction

Which of the following kinds of surface will offer maximum friction?

• Smooth and dry

• Smooth and wet

• Rough and dry

• Rough and wet