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Hint: Here we will proceed by defining the term muscular force and its examples. Then we will be discussing under which force the given options comes and hence to obtain the required answer.
Complete Step-by-Step solution:
Muscular force: Force which is exerted by muscles of the body is called Muscular force. All our body activities like lifting, walking, running, bending are because of muscular force. It is a contact force because muscular force can only be exerted on physical contact.
Examples: Walking, running, jumping etc. all are examples of muscular force and there are many more activities which are done by applying the power of muscles that all will be examples of muscular force.
A porter carrying a load on a wheel-barrow is not an example for muscular force. Here the type of force is magnetic force.
An apple falling from a tree is not an example of muscular force. Here the type of force is gravitational force offered by the earth.
Charges produced by friction is not an example of muscular force. Here the type of force is frictional force.
Thus, the correct option is D. none of these.
Note: The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. Magnetic force is due to attraction or repulsion that arises between electrically charged particles because of their motion. Frictional Force refers to the force generated by two surfaces that contact and slide against each other.
Complete Step-by-Step solution:
Muscular force: Force which is exerted by muscles of the body is called Muscular force. All our body activities like lifting, walking, running, bending are because of muscular force. It is a contact force because muscular force can only be exerted on physical contact.
Examples: Walking, running, jumping etc. all are examples of muscular force and there are many more activities which are done by applying the power of muscles that all will be examples of muscular force.
A porter carrying a load on a wheel-barrow is not an example for muscular force. Here the type of force is magnetic force.
An apple falling from a tree is not an example of muscular force. Here the type of force is gravitational force offered by the earth.
Charges produced by friction is not an example of muscular force. Here the type of force is frictional force.
Thus, the correct option is D. none of these.
Note: The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. Magnetic force is due to attraction or repulsion that arises between electrically charged particles because of their motion. Frictional Force refers to the force generated by two surfaces that contact and slide against each other.
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