Which one of the following processes is well approximated by a conservative forc
ID: 1791169 • Letter: W
Question
Which one of the following processes is well approximated by a conservative force?
A child pulling her sister on a toboggan in the snow.
The wind on your arm outside the window of a speeding automobile.
The wing of an aircraft generating aerodynamic lift, keeping the aircraft at altitude.
The springs in an automobile’s suspension system, keeping the car on the road.
None of the above
A child pulling her sister on a toboggan in the snow.
The wind on your arm outside the window of a speeding automobile.
The wing of an aircraft generating aerodynamic lift, keeping the aircraft at altitude.
The springs in an automobile’s suspension system, keeping the car on the road.
None of the above
Explanation / Answer
A child pulling her sister on a toboggan in the snow can be considered as a conservative process as frictional losses due to friciton are vely low on ice with very slippery surface
The wind on your arm outside the window of a speeding automobile. is not a conservative process as the wind drag does non conservative work against the motion.
The wing of an aircraft generating aerodynamic lift, keeping the aircraft at altitude is not a conservative process as the lift generation is accompanied by drag forces which are non conservative in nature
The springs in an automobile’s suspension system, keeping the car on the road can be considered as conservative process if spring damping is very low and all the energy stored in the spring is not wasted. But this is not the case as automobile shockers are meant to dissipate energy and hence this is not a conservative process
hence
A child pulling her sister on a toboggan in the snow. is a conservative process
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