WorksheetsFreaky Friction.
Total questions: 15
Worksheet time: 7mins
Who will move a larger distance in the same duration?
A on Ice as ice is cold.
B on Grass.
A on Ice as friction is less.
B on Grass as friction is less.
The boy has to push hard to move the box. Why?
Because the weight is heavy.
Because Interlocking initially is hard to break.
Because the boy has less energy.
Because surface is smooth.
The girl in the picture is losing the tug of war game. What can be the probable reason?
The boy is stronger than her.
The girl is not pulling enough.
The boy put oil on her side of rope.
The girl is strong enough.
Observe the picture carefully. When we walk or run then which one is true?
Friction acts in the same direction as we walk or run i.e., it helps us in walking/running.
Friction acts in opposite direction of our walking or running.
Friction can act in any direction it wants to.
Friction does not act while we walk.
Picture can be directly related to which one of these?
Sliding Friction.
Friction.
Static Friction.
Rolling Friction.
Block of mass 'm' is kept on an inclined surface. But it is not falling down. Reason is -
Static friction by the surface.
Surface is very smooth.
Gravity is not pulling it down so it stays.
Angle of incline is very less.
Use one word for what's shown in the picture -
Machine Force
Pressure on ground
Smooth surface
Interlocking between surfaces in contact
The car slows down quickly in sand.
Sand is rough. It applies large friction.
Car lost it's speed and slows down.
Interlocking in sand is very high.
All of the above are true.
Shape of the air plane is
Conical
Rounded
Cylindrical
Stream lined
What is the man trying to do with his bicycle?
Putting water for better work.
Oiling or greasing. It will reduce rubbing between parts.
Pumping out vaccum.
Trying to reduce air friction.
Shoes here you can see are spiked in outward direction for man to walk better on muddy areas. It's called -
Increasing Friction.
Decreasing Friction.
Any of the above.
No of the above.
The man knows what is to be done here. What does he know.
He is using two sticks for fun.
His intention is to cut the wood .
He knows about how friction produces heat.
He knows Friction produces sound.
If this child wants to play on the slides then -
Friction should be high.
Friction should not exist.
Friction should be very less.
Gravity should not be there.
Box is moving down because-
Whenever gravity pulls, things go down.
Sliding Friction is action.
Someone is pulling it.
Static friction's maximum limit had reached, couldn't stop it any further.
The pictures suggest -
Increasing friction ways only.
Decreasing Friction ways.
Any of the above is true.
None of the above is true.
