Contact Forces
Contact Forces: Overview
This Topic covers sub-topics such as Friction Force, Muscular Forces and, Contact Forces
Important Questions on Contact Forces
Name the type of force which acts in the following cases:
A moving ball stops after going to a certain distance.
Name the type of force which acts in the following cases:
Kicking of a football
Name the type of force which acts in the following cases:
Pulling a cart
Tick the odd-one out giving reason.
Magnetic force, Electrostatic force, Muscular force, Gravitational force
A horse pulls a cart by applying force. Which force is it?
Give one word for the force produced by a machine.
When cars drive on icy roads, the friction between the car and the road is reduced. If the friction was reduced to zero, which statement describes the motion of the car along a flat icy road?
If there were no friction, what would happen to a moving object?
Unscramble the following word to make a meaningful word:
OCNTTAC.
Give one word for the following.
Force acting between two surfaces in contact with each other that tends to oppose the motion of a moving body
Give reasons for the following.
When used for a long time, slippers with rubber soles become slippery.
Which of the following is not a non-contact force?
What is muscular force? Why is it called contact force?
A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad?
A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.
A load suspended from a spring while its other end is on a hook fixed to a wall.
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.
(b) Taking out paste from a toothpaste tube.
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.
(a) Squeezing a piece of lemon between the fingers to extract its juice.
