Q.1:When a force is applied to a body,several effects are possible.Which of the folloeing could NOT occur?
a.The body speeds up.
b.The body rotates.
c.The mass of the body decreases.
d.The body changes direction.
e.The body remains as it was.
Force does not change mass.
To determine which of the following effects could NOT occur when a force is applied to a body, we need to consider the principles of forces and motion.
a. The body speeds up: When a force is applied to an object, it can cause the object to accelerate and increase its speed. This is a possible effect of applying force.
b. The body rotates: Applying a force to an object can also cause it to rotate, especially if the force is applied at a point away from the object's center of mass. So, this is also a possible effect of applying force.
c. The mass of the body decreases: Applying a force to an object does not directly affect its mass. Mass is an intrinsic property of an object and remains constant unless additional mass is added or removed. So, this effect cannot occur due to the application of force.
d. The body changes direction: When a force is applied to an object, it can cause the object to change its direction of motion. This is a valid effect of applying force.
e. The body remains as it was: If no force is applied to an object, it will continue to remain at rest or in uniform motion. However, when a force is applied, the object is expected to exhibit one or more of the effects mentioned above. So, this effect is unlikely to occur when a force is applied.
Based on this analysis, the effect that could NOT occur when a force is applied to a body is c. The mass of the body decreases. Applying a force does not directly change the mass of an object.