Solutions of physics online class test-3 of class 6

 1.Resultant force always acts in the direction of

Ans. Greater force.

2.An example of contact force is

Ans. Friction or frictional force.

3.The force which always causes attraction is

Ans. Gravitational force

4.Gravitational unit of force is

Ans. Kilogram force.

5.In pulling a cart, the force applied by a horse is

Ans. Muscular force.

6.Tyres of of vehicle have grooves on them for

Ans. Increasing friction.

7.Electro static force is

Ans. Both attractive as well as repulsive.

8.Which one of these is not used to increase the friction

Ans. Polishing.

9.Frictional force increases with increase in

Ans. Roughness of surface.

10.1 kilogram force is equal to

Ans.  9.8N

11.Ball bearing is used to

Ans. To decrease friction.

12.The pull of of Earth is

Ans. Gravitational force.

13 .Which of the following are contact forces

Ans. All of these (muscular force, mechanical force, frictional force)

14. Spring balance is used to measure

Ans. Weight.

15.S.I. unit of of force is

Ans. Newton.

16.

A) force - push or pull

B) friction- consequential force

C) cause of friction- roughness

D) advantages of friction- writing on a paper

E) force of gravity- weight of a body