Advertisements
Advertisements
Question
Explain the following:
Why does dust fly off, when a carpet is hit with a stick?
Advertisements
Solution
Because of the sudden movement, the clothes moves, but dust on account of the inertia of rest is left behind.
APPEARS IN
RELATED QUESTIONS
In the following example, try to identify the number of times the velocity of the ball changes:
“A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”.
Also identify the agent supplying the force in each case.
Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?
Why is it advised to tie any luggage kept on the roof of a bus with a rope?
Explain why, a person travelling in a bus falls forward when the bus stops suddenly.
The physical quantity which makes it easier to accelerate a small car than a large car is measured in the unit of :
Explain the following :
When a corridor train suddenly starts , the sliding doors of some compartments may open .
Explain the following:
Why does a pillion rider fall forward, when the driver of a two-wheeler suddenly applies the brakes?
Inertia of a body depends on
The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the Earth then its value will be ______ kg.
Two blocks of masses 8 kg and 2 kg respectively lie on a smooth horizontal surface in contact with one other. They are pushed by a horizontally applied force of 15 N. Calculate the force exerted on the 2 kg mass.
