Mr. S guides a golf ball around the metal rim When the ball leaves the rim, which path (1, 2, or 3) will the golf ball follow? The answer is 2. Once leaving the rim, the ball will follow an “inertial path” (i.e., a straight line).
What type of path does a moving object follow in the absence of a force?
When there is no force acting on a body then a moving object move in a straight line with constant velocity and an object in rest stays in rest.
What is state of motion for class 8?
The state of motion of an object is defined by its velocity – the speed with a direction.
What is Newton’s 1st law called?
Newton’s first law: the law of inertia Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
What is term used to describe a force which tries to pull two objects toward each other?
Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the stronger its gravitational pull is. Earth’s gravity is what keeps you on the ground and what causes objects to fall.
Can you make an object go around a curve without applying any force explain your answer?
Answer and Explanation: No, it is not possible to move in a curved path in the absence of the force. Because in the absence of force body will not change its direction to move in a curved path, and it will continuously move in a straight line.
Can an object be in mechanical equilibrium when only a single nonzero force acts on it explain?
If only a single nonzero force acts on an object, it will not be in mechanical equilibrium. There would have to be another or other forces to result in a zero net force for equilibrium.
What kind of force is friction?
Friction is a type of contact force.
Is inertia The cause why objects maintain their state of motion?
Inertia is the tendency of all objects to resist any change in motion. Inertia causes a moving object to stay in motion at the same velocity (speed and direction) unless a force acts on it to change its speed or direction. It also causes an object at rest to stay at rest.
Which of the following is proper example to explain that force on an object may change its shape?
Kicking a ball to move faster or jumping from a height and switching on a fan to rotate change the linear velocity of the ball and angular velocity of the fan respectively whereas tearing a paper into pieces changes the shape of the paper. Thus tearing action describes the change of shape by applying force.
What is Newton’s 2nd law called?
The other name for Newton’s second law is the law of force and acceleration.
What’s Newton’s 4th law?
Arthat Corona padhai ka vyutkrimanupati hota hai (Newton’s fourth law: When Corona increases, study decreases. When Corona decreases, study increases. This means that Corona is inversely proportional to study).”
When an object at rest velocity and acceleration is zero?
There are two conditions where acceleration can be zero, they are: Displacement equal to zero. For an object at rest, the velocity of the object is zero and hence the acceleration of an object will also be equal to zero. The initial and final velocity of the object is the same and remains constant.
What are the 7 types of forces?
- Applied Force.
- Gravitational Force.
- Normal Force.
- Frictional Force.
- Air Resistance Force.
- Tension Force.
- Spring Force.
What are the 5 main types of forces?
- Muscular Forces. Muscles functions to produce a resulting force which is known as ‘muscular force’.
- Frictional Forces. When an object changes its state motion, ‘frictional force’ acts upon.
- Applied Force.
- Tension Force.
- Spring Force.
- Gravitational Force.
Which of the following terms measures the amount of force of gravity on a physical object?
Weight measures the force of gravity pulling downward on an object. The SI unit for weight, like other forces, is the Newton (N). On Earth, a mass of 1 kilogram has a weight of about 10 Newtons because of the pull of Earth’s gravity.
What provides the centripetal force exerted on a satellite in orbit around a planet inertia tension gravity?
This centripetal force is supplied by gravity – the force that universally acts at a distance between any two objects that have mass. Were it not for this force, the satellite in motion would continue in motion at the same speed and in the same direction. It would follow its inertial, straight-line path.
Will the words centripetal force ever be written on a free body diagram explain?
You do NOT put a centripetal force on a free-body diagram for the same reason that ma does not appear on a free body diagram; F = ma is the net force, and the net force happens to have the special form when we’re dealing with uniform circular motion.
How do you find angular velocity from centripetal acceleration?
The term rev/min stands for revolutions per minute. By converting this to radians per second, we obtain the angular velocity ω. Because r is given, we can use the second expression in the equation ac=v2r;ac=rω2 to calculate the centripetal acceleration.
Why can a body not be in equilibrium due to single force acting on it?
In other words, if we want to be in equilibrium with only one force, it must be that the force is 0 (there is no force! A contradiction to the assumption that we have one force acting on the body). So, we see that we cannot be in equilibrium with only one force acting on the object.
Can a body be in a state of equilibrium when only one force acts on it explain?
No: equilibrium requires forces to be balanced, so it requires (at least) two forces, unless there are zero forces acting.
When a body is in equilibrium the vector of all forces acting on it is zero?
The net force is the vector sum of all the forces acting on an object. When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero. A vector can only have zero magnitude if all of its components are zero.
Does the coefficient of kinetic friction depend on the weight of the block?
Also, the coefficient of friction doesn’t depend on the mass of the object.
How do you find the frictional force without coefficient on a flat surface?
What do you understand by the term friction explain how it is caused?
Friction is defined as the resistance offered by the surfaces that are in contact when they move past each other. Friction is caused due to the irregularities on the two surfaces in contact. So, when one object moves over the other, these irregularities on the surface get entangled, giving rise to friction.