Rayat Shikshan Sansthas Sadhana Vidyalaya Hadpsar Pune28 STD

Rayat Shikshan Sanstha’s Sadhana Vidyalaya, Hadpsar, Pune-28 STD – 6 TH Subject – G. Science Topic –FORCE Sub Topic –Types Of Force v. PRESENT BY Sou. Gawande D. M

TYPES OF FORCE 1. Muscular force 2. Mechanical Force 3. Gravitational Force 4. Magnetic Force 5. Frictional Force 6. Static electric Force

1. Muscular force: The Force applied using parts of the body like arms or legs is called Muscular Force Example. 1. The Players apply the force by moving their own limbs. 2. Force applied through the use of animals ilke elephants

FORCE APPLIED BY USING MACHINES IS CALLED MECHANICAL FORCE Example. Machanical force is used in motorvehicles and other commonly used machines

Force appliedby the earth, pulling everything towords it, is know as Gravitational Force. When an object is thrown upwards. It’s motion gradually decreases and eventually becomes zero; after that it begins to fall downwards.

The force exerted by a magnet is called magnetic force. Example. 1. Certain objects get attracted towards the magnet and therfore the proporty of magnetism can be used as a force. 2. The maglev train.

A Certain force acts between a moving object and the surface along which it moves , this force is called friction Friction alays acts in a direction opposite to the motion of the body. Friction between different surfaces is different.

Electricity produced due to friction is called statice electric force It is a weak force compared to other forces. It is obtained by rubbing specific substances on one another.

HOME WORK Name the force applied in each of the following actions: Action 1 Abullock pulling a cart. 2 A crane lifting a heavy iron load. 3 Weighing something on a spring balance. 4 Applying the brakes on a bicycle. 5 Picking up paper scraps with a plastic ruler. Force applied