Author: admin
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Definitions, Equation & Examples
The turning effect of a force is known as the moment. It is the product of the force multiplied by the perpendicular distance from the line of action of the force to the pivot or point where the object will turn. The SI unit of moment of a force is Newton-metre (Nm). It is a…
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Examples
Examples of Questions Solved with the Help of Angular Velocity (or speed) Formula Example 1:- Earth takes a whole year (365 days) to complete a single revolution around the sun. Calculate the angular speed with which the earth is rotating around the sun. Solution: The plane earth requires a full year to make a single…
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Conversion of Degree to Radian and Radian to Degree.
The angle of rotation is often measured in the unit called the radian. (Radians are dimensionless units and are defined as the ratio of two distances, radius and arc length.) One complete revolution around the circumference of a circular object covers 2π radians or 360o in degree. Radian and degree are interconvertible and we can…
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Formula of Angular Speed
The linear speed at which we already have a point on an object which is rotating depends on its distance from the centre of rotation. The angular speed which we know is the angle that an object generally moves through in a certain amount of time. The angular speed has units of radians per second…
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How to Find Angular Speed
The speed which is known as the angular speed is the measure of how fast the central angle of a rotating body changes with respect to time. Angular speed formula is the relationship between angular speed and the speed which is linear along with a few angular speed problems. The term speed that is used…
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Circular or Rotational Motion
What exactly do we mean by circular motion or rotation? Rotational motion is the circular motion of an object about an axis of rotation when an object moves in a circular path. For example, circular motions include a race car speeding around a circular curve or a toy which is attached to a string swinging…
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Rotational Speed Definition & Problems
Previously, we have learned the topics of angular speed, so here, we will discuss the formula of angular speed. The formula for the angular speed is used to calculate the distance one particular body covers in terms of rotations or the revolutions to the time taken. Speed is all about how slow or how fast…
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Solved Example
Question: A guy can swim at a speed of 4.0 km/h in still water. How long does it take him to traverse a 1.0 km wide river at 3.0 km/h while keeping his strokes parallel to the current? After he reaches the opposite bank, how far down the river does he go? Sol: Speed of…
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The Equation of Trajectory
The trajectory equation is the path taken by a particle during projectile motion. The following is the equation: y = x tanθ – gx2/2u2cos2θ Because this equation is similar to the parabola (y = ax + bx2), it is concluded that that projectile motion is always parabolic in character.
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Horizontal Range
It is defined as the horizontal distance covered to the maximum distance possible. The horizontal range is a distance (OB) is: OB = Horizontal component of velocity(ux) * Total time(t) (ux = u cosθ and t = 2usinθ/g) That is, Range(R) = ucosθ * 2usinθ/g Horizontal Range of the projectile is: Horizontal Range(R) =…