Question 2 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0daf59b460d7261f376.PNG' /> From the above figure, if you tie a string around a brick and pull it by spring balance and then wrap a polythene on it and repeat the activity, will the spring balance measurement show any difference?

Question 3 :
Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be

Question 4 :
If an object started moving, it would never stop if there were no friction.

Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d071f59b460d7261f2f0.PNG' /> In the above image, While playing tug of war Preeti felt that the rope was slipping through her hands. Which of the following is a way out for her to prevent this?

Question 7 :
Four children were asked to arrange forces due to rolling, static and sliding frictions in decreasing order. Their arrangements are given below. Choose the correct arrangement.

Question 9 :
State true or false: There is rolling friction between the wheels of a moving train and iron rails.

Question 10 :
A toy car released with the same initial speed will travel farthest on

Question 11 :
Imagine that an object is falling through a long straight glass tube held vertical; air has been removed completely from the tube. The object does not touch the walls of the tube. Will the object experience any force of friction?