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The force exerted by our muscles

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Important Questions on Force and Pressure

EASY
Science>Physics>Force and Pressure>Contact Forces
Calculate the number of electrons constituting one coulomb of charge.
MEDIUM
Science>Physics>Force and Pressure>Contact Forces
A body has a negative charge of 1 μc. It means the body has gained:
EASY
Science>Physics>Force and Pressure>Contact Forces
What is the muscular force? Give one example of muscular force.
MEDIUM
Science>Physics>Force and Pressure>Contact Forces
Why is heat produced when we rub our hands together?
EASY
Science>Physics>Force and Pressure>Contact Forces
Name two contact forces.
EASY
Science>Physics>Force and Pressure>Contact Forces
Which of the following is not an example of muscular force?
EASY
Science>Physics>Force and Pressure>Contact Forces
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.
Taking out paste from a toothpaste tube.
EASY
Science>Physics>Force and Pressure>Contact Forces
Which force do the animals apply while moving, chewing and doing other activities
MEDIUM
Science>Physics>Force and Pressure>Contact Forces
It is difficult to walk on a wet floor. Why?
EASY
Science>Physics>Force and Pressure>Contact Forces
Name the force which always opposes relative motion.
EASY
Science>Physics>Force and Pressure>Contact Forces
The force applied by the muscles is called _____ force.
EASY
Science>Physics>Force and Pressure>Contact Forces
Which force makes a rolling ball stop on its own?
EASY
Science>Physics>Force and Pressure>Contact Forces
Define frictional force (or friction). 
EASY
Science>Physics>Force and Pressure>Contact Forces
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.
Squeezing a piece of lemon between the fingers to extract its juice.
MEDIUM
Science>Physics>Force and Pressure>Contact Forces
Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion
MEDIUM
Science>Physics>Force and Pressure>Contact Forces
List any two advantages and two disadvantages of friction.
EASY
Science>Physics>Force and Pressure>Contact Forces
Explain why the frictional force is said to be a contact force.
EASY
Science>Physics>Force and Pressure>Contact Forces
When an animal pulls a cart, it uses _____ force.
EASY
Science>Physics>Force and Pressure>Contact Forces
Cotyledons are also called-
HARD
Science>Physics>Force and Pressure>Contact Forces
Differentiate between muscular force and elastic force.