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Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
Energy = Force x Distance, therefore in this case it is 134.7G x 7.19, since the force attracting a mass M to the earth is MG. Now G = 9.81 meters/sec2, so the sum comes to 134.7 x 9.81 x 7.19, and the answer is in Joules. Value of answer = 9500.9 Joules.
That's some heavy man by the way, he should diet!
find a materials with a high coefficient of static friction and use them against each other ( like rubber dry concrete ) and bound them to the object and the surface it rests on. Increase the normal force by adding mass on the object or applying a perpendicular force to the surface of the object.
I'm Laica Mae Montillano
1st year section 1
I'm studying at San Antonio National High School
Where on a roller coaster does energy transform?
As it starts to climb the lift hill, the electrical energy builds potential energy. On its way down the first drop, the cars gain kinetic energy (energy of motion) and lose potential energy (stored energy). When it goes up the next hill, the potential energy increases and kinetic decreases, evident in the cars slowing down. Potential is greatest at the top of the highest hill. Along the way, more energy is lost in friction and sound energy.
In addition to the mass of both objects and the distance the stationary object was moved, you need to know the coefficient of restitution or the type of collision (elastic or inelastic). This information will help you determine how much kinetic energy was transferred during the collision and allow you to calculate the velocity of the moving object before and after the collision.
Angle between force and displacement to get minimum work?
The work done by a force is the dot product of the force and the displacement of the point of application of the force i.e.
component of force in the direction of displacement * displacement
or
component of displacement in the direction of force * force
let W be the work done. Then :
W = F.S
W = |F|*|S|*cos(θ) ---- equation 1
where F and S are force and displacement in vector form and |F|, |S| are their magnitudes respectively. cos(θ) is the angle between line of action of force vector and displacement vector.
It is clear from the equation 1 that work will be minimum when cos(θ) is minimum. It is known from trigonometry that minimum value of cos(θ) is -1 which is for angle 1800 or π radians. So work done will be minimum when angle between force and displacement vector is π radians or 1800 i.e. when point of application of force is displaced exactly opposite to the direction of application of force.
I appreciate the last attempt to answer the question, but I think it is wrong. The answer should be 90°, because although cos180° = -1, the negative sign in
- FScos180° only signifies that the work done has taken away energy from the system, or it signifies that the work is done in the opposite direction, implying that work is done. When the angle is 90°, on the other hand, work done = 0, ie, no work is done at all. Thus the answer should be 90°.
(The above answers define minimum work differently.
The first answers is if minimum work is negative work, therefore if you do work in the opposite direction of the displacement, the work you do is negative and is less than 0. Minimum work here is the work that is the lowest number.
The second answer defines minimum work as the magnitudeof the work done being minimized. Since magnitude is always positive, minimum work in this case would always be zero. Which one is correct depends on the situation you are dealing with.)
What will happen If the energy content of an object continually increases?
If the energy content of an object continually increases without a corresponding release or dissipation of energy, the object may become unstable and could potentially lead to unpredictable behavior. This could result in overheating, structural damage, or even a violent release of energy. It is important to manage and control the energy content of objects to ensure safety and stability.
Kinetic energy is due to the position of an object?
Kinetic energy is actually due to the motion of an object, not its position. It is the energy an object possesses due to its motion, and is directly related to its velocity and mass. Potential energy, on the other hand, is energy due to an object's position.
Name a process in which momentum is conserved but kinetic energy is not conserved?
A collision between two objects where some of the kinetic energy is converted into other forms of energy, such as heat or sound. Momentum is conserved in such collisions because the total momentum before and after the collision remains constant, but kinetic energy is not conserved since it changes into other forms.
Coca-Cola vs fanta vs sprite graph?
They are ALL great sodas, but, coca cola is original. So, Im going with Coca cola.
The temperature at which the particles of a substance have more kinetic energy to transform is?
The temperature at which the particles of a substance have enough kinetic energy to transform from one phase to another is called the phase transition temperature. This temperature varies depending on the substance and the phase transition, such as melting, boiling, or freezing.
What converts the potential energy of a reservoir into the kinetic energy of a spinning turbine?
The potential energy of a reservoir is converted into the kinetic energy of a spinning turbine through a hydroelectric power plant. When water is released from the reservoir at a higher elevation, it flows through turbines connected to generators, causing them to spin and produce electricity. This process harnesses the gravitational potential energy of the water and converts it into mechanical energy that drives the turbines.
Assuming no external energy is added or lost, the total energy of a closed system remains constant. Therefore, after 1.1 hours, the total energy of the system will still be 7944 J.
Is acceleration the change of speed and or direction of an object?
These two cases are represented by "positive" acceleration. The opposite cases (slowing down in the positive direction or speeding up in the negative direction) are represented by "negative" acceleration.
Name the physical quantity whose SI unit is JC-1Is it a scalar or a vector quantity?
The physical quantity with the SI unit JC^-1 is the electric permittivity. It is a scalar quantity because it describes the ability of a material to store and transmit electrical energy.
How do you plot a Acceleration vs sin theta graph on Microsoft Excel?
To plot an Acceleration vs sin theta graph in Microsoft Excel, you first need to have the data for acceleration and sin theta in two columns. Then select the two columns of data, go to the "Insert" tab, choose "Scatter" from the charts group, and then select a scatter plot with data points only. Finally, customize your graph by adding axis labels and a title.
What is the slope of a velocity vs temperature graph?
The slope of a temperature vs time graph shows the rate of change of temperature. The slope will be positive if the temperature is increasing with time and negative if it is decreasing.
What is moving at Mach 5 called?
An object traveling at Mach 5 is moving at five times the speed of sound. At standard sea level conditions, this is roughly 3,836 miles per hour or 6,174 kilometers per hour. This speed is classified as hypersonic.
the maximum value of limiting friction is = coff. of static fric. * normal force.
in this case normal force =mgcosA=17N.
the coff=0.5 so the maximum friction=0.5*17=8.5N.
but the force acting downward on the incline is mgsinA which is =2*10*0.5=10N.
as it has breached the value of friction,the block will move.now kinetic fric. will act.As the coff. of kinetic fric.=0,the surface is as good as a frictionless one.use the laws of kinematics to find the velocity(v=u+at,a=gsinA,t=3,u=0)
hence the answer is=15m/s.
in reality if there is a coff of static fric,ther ewill be a coff.of kinetic fric.
good luck.
regards
carlitos tevez.
Is Kientic energy greater than potential energy?
It depends on the specifics of the situation. Kinetic energy is the energy an object possesses due to its motion, while potential energy is the energy that an object possesses due to its position or state. In general, kinetic energy can be greater than potential energy, for example when an object is moving quickly or has a large mass.
What is the formula mass times velocity squared divided by 2?
K=1/2*m*v2 is the formula for Kinetic Energy.
The work done by the cable is equal to the force applied by the cable multiplied by the distance it moves. The work done by the elevator is zero since it moves at a constant velocity, meaning there is no change in kinetic energy. The work done by the cable is equal to the force of gravity on the elevator multiplied by the distance it is lifted. Work = force x distance = (mass x gravity) x distance = (1380 kg x 9.8 m/s^2) x 29 m = 390,804 Joules.
The potential energy change can be calculated using the formula: ΔPE = mgh, where m = 0.40 kg, g = 9.8 m/s², and h = 0.07 m. Plugging in these values, we have ΔPE = 0.40 * 9.8 * 0.07 = 0.2744 J. The potential energy change is 0.2744 Joules.
The braking force x stopping distance (assuming constant braking force) is equal to the loss of kinetic energy of the vehicle.
And if it's not constant, you can integrate the dot product of the force vector and the differential x-vector.
If you want the power of heat generation, you will need to find how much energy is being dissipated (i.e. how much kinetic energy is lost) per unit of time.
What graph are used to analyze the motionof an accelerating objects?
On a accelerating body, Velocity and distance of an object are effected.
For a graph plotted with Acceleration to Time, it directly gives the acceleration at any given instant.
For a graph plotted with Velocity versus Time. The Slope at any instant would give the Acceleration. Or given the time frame, say A to B. Acceleration can be found out by subtracting velocity at A from velocity at B divided by the time frame A to B.
What is the effect of changing the initial position on position time and velocity time graph?
Changing the initial position on a position vs time graph has no effect on the velocity vs time graph. Velocity is the derivative of position. This means velocity only depends on the rate of change (slope) of position. Changing the initial position of an object has no effect on the slope. Mathematically, this is equivalent to adding a constant to a function. Since the derivative of a constant is always 0, a change in initial position has no impact on the derivative. Here is an example.
Say we have the position functions x(t)= 4+9t and y(t)= 27+9t.
then the velocity function of x would be x'(t)=v(t)= 9
And the velocity function of y would be Y'(t)=v(t)= 9
