Table of Contents
- 1 What is the direction of the net force on the car?
- 2 What are the forces acting on an object steadily suspended on a string?
- 3 What forces are acting on a car when it is accelerating?
- 4 What are the forces that act on the ball?
- 5 What are the forces that act on the ball answers?
- 6 What forces act on a vehicle?
- 7 How is centripetal force calculated?
- 8 Why does the ball go backwards when a car accelerates?
- 9 Why does a balloon move forward when acceleration is applied?
What is the direction of the net force on the car?
The direction of the net force is in the same direction as the acceleration.
What are the forces acting on an object steadily suspended on a string?
A string or rope exerts a contact force on an object when it pulls on it. We call this a tension force, represented by the symbol T. Tension is always directed along the line of the rope or string, with no component perpendicular to it.
What forces are acting on a car when it is accelerating?
When the car accelerates , there is a horizontal forward force on the car, and a corresponding backwards horizontal force on the ground. As the car picks up speed, air resistance produces a backwards force. On the diagram we have drawn some forces offset from the center of mass, so that the vectors don’t overlap.
What is the net force in figure?
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.
In which situation is there no net force on the car?
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.
What are the forces that act on the ball?
There are three forces that act on a baseball in flight. The forces are the weight, drag, and lift. Lift and drag are actually two components of a single aerodynamic force acting on the ball. Drag acts in a direction opposite to the motion, and lift acts perpendicular to the motion.
What are the forces that act on the ball answers?
Correct answer: The only force acting on the ball is gravity. Gravity points in the downward direction.
What forces act on a vehicle?
Forces Acting on a Vehicle
- Rolling Resistance Force.
- Aerodynamic Drag Force.
- Acceleration Force.
- Hill Climbing Force.
What forces are on cars?
The following natural forces and laws of physics apply to every moving vehicle and can have effects such as changing the speed or direction of your vehicle:
- Gravity.
- Inertia.
- Kinetic Energy.
- Potential Energy.
- Friction.
- Centrifugal Force.
- Momentum.
What is the velocity of the toy plane in m s?
416 J, 475 J, 466 J, 491 J. Solution: Given mass of toy plane is 2.5 kg at 18 m above the ground. Its velocity is 4.5 m/s.
How is centripetal force calculated?
To calculate the centripetal force for an object travelling in a circular motion, you should:
- Find the square of its linear velocity, v² .
- Multiply this value by its mass, m .
- Divide everything by the circle’s radius, r .
Why does the ball go backwards when a car accelerates?
It depends on which direction the car is accelerating. If it is accelerating forwards, the ball will go backwards as it’s inertia will resist motion.
Why does a balloon move forward when acceleration is applied?
The balloon doesn’t know and doesn’t care if the acceleration is from gravity or from the acceleration of the car; it just tries to move in the direction it naturally moves, namely, against the direction of the acceleration. Thus, it moves forwards when you accelerate.
How can the centripetal acceleration of a ball be increased?
A ball is whirled on the end of a string in a horizontal circle of radius R at constant speed t’. The centripetal acceleration of the ball can be increased by a factor of 4 by the following alternative ways. I. keeping the speed fixed and increasing the radius by a factor of 4. Il.
What is the acceleration of a car on a hanging object?
This basically means that the accelerating car can be thought of from the perspective of the hanging object, as a horizontal gravitational field, with an acceleration equal to that of the car. Therefore we effectively have two forces acting on the object. One downwards of $mg$, the other horizontally of $ma$, where a is the acceleration of the car.