Muscular Force
Muscular Force
The force resulting because of action of muscle is called muscular force. Both, human beings and animals exert muscular force to do work. Muscular force is applied only after interaction with the object. Hence it is a type of contact force. The various examples are:
1 While kicking a ball, the player applies force over the ball using his leg muscles.
2. While opening a drawer, you pull the drawer holding it by hand. In this action, muscles of your hand apply the force.
3. Suppose a book is lying on a table. To lift this book from the table, some force is required. When we lift this book from the table by hand, the force is exerted by the muscles of our arm.
4. The human beings exert muscular force for performing the various day to day activities like walking, running, jumping, climbing, lifting, pushing, pulling, kicking, stretching, squeezing, twisting and pressing the objects.
5. Muscular force enables us to perform all the activities involving the movement or bending of our body parts. The muscular force also acts inside our body to perform various functions required for our survival. For example, in the process of digestion, it is the muscular force which pushes the food through the alimentary canal. The expansion and contraction of lungs when we inhale and exhale air during breathing, also involves muscular force. And the beating of heart also takes place by the muscular force produced by cardiac muscles.
The animals like an ox, camel and horse provide the force of their muscles and help the man in doing harder jobs. For example, ox pulls the plough by using its muscular force. Similarly, a horse and camel exert their muscular force in pulling the carts. An elephant pulls heavy logs of wood by using the muscular force. And in arctic regions (snow-bound regions), reindeers pull the sledges (wheel-less vehicles) by using their muscular force.
Since muscular force can be applied to an object only when our body (or body of an animal) is in contact with the object, therefore, muscular force is a contact force. For example, when we lift a book from a table by applying muscular force, then our hand is in contact with the book. We cannot lift the book from table without touching it. Our contact (or that of an animal) with an object for applying muscular force can also be through a stick or a piece of rope, etc. For example, when we hit a hockey ball, we apply muscular force to ball through the hockey stick. And when we draw a bucket of water from a well, then we apply the force through a rope (tied to the bucket).
The force used by an archer to pull a bow is _________________. | |||
| Right Option : A | |||
| View Explanation |
An elephant pulls heavy logs of wood by using ___________________ .
| |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct ? (a) The expansion and contraction of lungs when we inhale and exhale air during breathing, involves muscular force. (b) An elephant pulls heavy logs of wood is an example of the muscular force . (c) Muscular force is a type of non contact force. | |||
| Right Option : A | |||
| View Explanation | |||
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