1. Differentiate between contact and non contact forces with the help of examples.
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Answers
A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.
A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.
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Contact forces Non-contact forces
1.They can not work from a distance. 1.They can work from a distance as well.
2.Its various types are applied force,
normal force, tension frictional force 2.its various types are magnetic force
electrostatic force,gravitational force