What is the usual name of the forces which cannot produce motion in a body but only change its shape ?

Academic Physics NCERT Class 9

A balanced force cannot produce motion in a body but only change its shape.

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Updated on: 10-Oct-2022

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There are two types of forces X and Y. The forces belonging to type X can produce motion in a stationary object but cannot change the shape of the object. On the other hand, forces belonging to type Y cannot produce motion in a stationary object but can change the shape of the object. What is the general name of the forces such as (a) X, and (b) Y ?
Which of the following effect cannot be produced by an unbalanced force acting on a body?$(a)$. change in speed of the body$(b)$. change in shape of the body$(c)$. change in direction of motion of the body$(d)$. change in state of rest of the body
State whether the following statement is true or false : Unbalanced forces acting on a body change its shape.
Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discusswhy the forces acting on the bucket do not bring a change in its state of motion.
Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
Which of the two, balanced forces or unbalanced forces, can change the shape of an object ? Give an example to illustrate your answer.
Name the physical quantity which is considered to be a measure of the quantity of motion of a body.
When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of:$(a)$. balanced forces$(b)$. centripetal forces$(c)$. unbalanced forces$(d)$. centrifugal forces
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
Name the term which represent the rate of the change of the momentum of a body.
Name the technique by which doctors can produce pictures showing insides of the human body.
Which motion of the Earth causes a change in the season?
Define ‘state of motion’ of an object. Name the ‘agent’ which can change the state of motion of an object.
If the speed of a body is halved, what will be the change in its kinetic energy?
What is the special shape of the body to reduce friction?

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