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Question
A door lock is opened by turning the lever (handle) of length 0.2 m. If the moment of force produced is 1 Nm, then the minimum force required is ______.
Options
5 N
10 N
20 N
0.2 N
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Solution
A door lock is opened by turning the lever (handle) of length 0.2 m. If the moment of force produced is 1 Nm, then the minimum force required is 5 N.
Explanation:
`"Force" = "Moment of force"/"Length of lever"`
= `1/0.2`
= 5 N
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