Opening a door is an example of:

Contact force

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Non contact force

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Spring force

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Magnetic force

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Solution

The correct option is A Contact force
Opening a door requires our hand to apply force by pushing and pulling which is a contact force. There is some frictional force in the door hinge, against that we apply force. The hinge friction is again a contact force.

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Opening a door is an example of:

The correct option is A Contact force Opening a door requires our hand to apply force by pushing and pulling which is a contact force. There is some frictional force in the door hinge, against that we apply force. The hinge friction is again a contact force.

The correct option is A Contact force
Opening a door requires our hand to apply force by pushing and pulling which is a contact force. There is some frictional force in the door hinge, against that we apply force. The hinge friction is again a contact force.