Answer:
Any types of forces that require being in contact with another object come under ‘Contact Force’. All mechanical forces are contact forces. Contact forces further divide into following types of forces:
Muscular Forces
Muscles functions to produce a resulting force which is known as ‘muscular force’. Muscular force exists only when it is in contact with an object. We apply muscular force during the basic day to day work of our life such as breathing, digestion, lifting a bucket, pulling or pushing some object. Muscular force comes in handy to simply our work.
