Dr. K C Trikha and N K Sehgal Solutions for Chapter: Friction, Exercise 1: Something To Know
Dr. K C Trikha Science Solutions for Exercise - Dr. K C Trikha and N K Sehgal Solutions for Chapter: Friction, Exercise 1: Something To Know
Attempt the free practice questions on Chapter 5: Friction, Exercise 1: Something To Know with hints and solutions to strengthen your understanding. The Living World A book of Science and Technology solutions are prepared by Experienced Embibe Experts.
Questions from Dr. K C Trikha and N K Sehgal Solutions for Chapter: Friction, Exercise 1: Something To Know with Hints & Solutions
Suppose your writing desk is tilted to a position where a book kept on it just starts sliding down. The figure, showing the correct direction of frictional force acting on it, is-
Two boys are applying oppositely directed, and equal in magnitude, forces on a box as shown in the figure.
In such a case, the force of friction, that would exist between the lower end of the box and the ground, would be called?
Give reason for the following-
The tyres of the vehicles need to be changed regularly.
Give reason for the following-
The machine's parts are frequently oiled or greased.
Give a reason for the following -
Sports cars, aeroplanes, and boats are designed to have streamlined shapes.
Give reason for the following-
Metal chains are wrapped on tyres when they run on icy roads.
Give reason for the following-
Rollers are used for transporting luggage.
State and explain, with examples, how friction can help the cause of motion in certain situations.
