Friction is one of the key parameters of climbing. The further away the centre of mass is from the wall, the more friction force is required at the hands. What is the science behind rock climbing? The more vertical the rock, the more the compressive force will be applied perpendicularly to the surface, which will […]
For a body to purely roll down the inclined plane, static friction will act at the contact point and the will not slip on the surface. Hence work done by friction force is zero. How do you find the acceleration of a ball rolling down an incline? What happens when an object rolls down an […]
For decades, a math puzzle has stumped the smartest mathematicians in the world. x3+y3+z3=k, with k being all the numbers from one to 100, is a Diophantine equation that’s sometimes known as “summing of three cubes.” What is the hardest physics problem? Quantum Gravity The biggest unsolved problem in fundamental physics is how gravity and […]
The force (thrust) is equal to the exit mass flow rate times the exit velocity minus the free stream mass flow rate times the free stream velocity. What is propulsion force in physics? Propulsion is the means by which a force is imparted to change the velocity of a vehicle, affecting both its speed and […]
In a uniform electric field, the equation to calculate the electric potential difference is super easy: V = Ed. In this equation, V is the potential difference in volts, E is the electric field strength (in newtons per coulomb), and d is the distance between the two points (in meters). How do you calculate V […]
Braking Force Formula To calculate the braking force, divide the mass by 2, multiply by the result of the velocity squared, then divide by the distance. What happens when two cars collide physics? If there are only two objects involved in the collision, then the momentum change of the individual objects are equal in magnitude […]
A game of tug-of-war is a good way to think about this. When two teams are pulling in opposite directions, the movement of the rope (as calculated by Newton’s second law) will be determined by the net force on the rope. What is the physics in tug of war? These two forces are called action […]
Experts say a space elevator could be possible with current technology, especially if we were to build it on the moon. A lunar elevator would not have to contend with the Earth’s gravitational force or space debris. There are still many details to iron out, though, including how to build such a monumental structure. Would […]
the Great Pyramid of Giza, Egypt. the Hanging Gardens of Babylon. the Statue of Zeus at Olympia, Greece. the Temple of Artemis at Ephesus. the Mausoleum at Halicarnassus. the Colossus of Rhodes. the Lighthouse of Alexandria, Egypt. What is the most complicated physics problem? Quantum Gravity The biggest unsolved problem in fundamental physics is how […]
There is a 10 kg mass hanging from a rope. What is the tension in the rope if the acceleration of the mass is zero? Solution: We know that the force of tension is calculated using the formula T = mg + ma. How do you solve a tension problem in physics? Step 1: Identify […]
A rocket launches when the force of thrust pushing it upwards is greater than the weight force due to gravity downwards. This unbalanced force causes a rocket to accelerate upwards. A rocket will continue to speed up as long as there is a resultant force upwards caused by the thrust of the rocket engine. How […]
The force formula is defined by Newton’s second law of motion: Force exerted by an object equals mass times acceleration of that object: F = m โจ a. To use this formula, you need to use SI units: Newtons for force, kilograms for mass, and meters per second squared for acceleration. How do you solve […]
Choose how long the object is falling. In this example, we will use the time of 8 seconds. Calculate the final free fall speed (just before hitting the ground) with the formula v = vโ + gt = 0 + 9.80665 * 8 = 78.45 m/s . Find the free fall distance using the equation […]
If you stand on a scale in an elevator accelerating upward, you feel heavier because the elevator’s floor presses harder on your feet, and the scale will show a higher reading than when the elevator is at rest. On the other hand, when the elevator accelerates downward, you feel lighter. How do you solve an […]
Problem-Based Learning: Hmelo-Silver (2004) emphasised five goals of problem-based learning. These include helping students develop (1) Flexible knowledge, (2) Effective problem-solving skills, (3) Self-directed learning skills, (4) Effective collaboration skills, and (5) intrinsic motivation. What are the example problem-based learning activities? For example, a problem-based learning project could involve students pitching ideas and creating their […]
They work based on a simple physics concept in which water is forced out the bottom of the rocket by air pressure, and in doing so exerts an upward force pushing up on the rocket (Newton’s third law). This upward force causes the rocket to shoot upward at high speed. How does a bottle rocket […]
We saw that there are standard unit vectors called i, j, and k. Technically, engineers place a mark over the letters and call then i-hat, j-hat, and k-hat, respectively. For instance, i-hat is a vector of length one that heads to the right on a Cartesian plane. Does MIT use mastering physics? The tutoring program, […]
When we push or pull an object by using our body parts, we apply our muscular force on the object. Here, the boy is pushing the box with his hand, which implies that he is applying his muscular force. What causes the box to move as you push it across the floor? Sliding Friction While […]
Find the mass of the object. (It should be in kg.) Find the angle of incline of the surface. Multiply mass, gravitational acceleration, and the cosine of the inclination angle. Normal force = m x g x cos(ฮฑ) You can check your result in our normal force calculator. What is an example of work in […]
In other words, the work done is equal to the change in K.E. of the object! This is the Work-Energy theorem or the relation between Kinetic energy and Work done. In other words, the work done on an object is the change in its kinetic energy. W = ฮ(K.E.) How do you find work Physics […]
Once you wind up the string of a yo-yo, any kind of yo-yo, and hold it in your hand, it has potential energy. In fact, it has not one, but two kinds of potential energy. It has potential energy because it can drop down, and it also has potential energy because it can unwind. What […]
When the thermometer is placed in cold water, the molecules slow down and their attractions bring them a little closer together bringing them down the tube. The red liquid is contained in a very thin tube so that a small difference in the volume of the liquid will be noticeable. How do you solve for […]
Trigonometry in Projectile Motion Problems Essentially, you create a right-angled triangle with the hypotenuse inclined at the launch angle (โฮธโ) and the magnitude of the velocity as the length, and then the adjacent side is the horizontal component of the velocity and the opposite side is the vertical velocity. How do you solve projectile problems […]
1) Inclined plane is used to find out frictional coefficients (static & kinetic both) between two surfaces. 2) To keep the vehicle moves safely on road’s circular track. 3) To lift/drop an object to/from a height safely through inclined surface. How do you solve an inclined plane in physics? What are 10 examples of an […]
A larger diameter pulley wheel (aka sheave) is technically more efficient than a smaller diameter pulley. But it’s a trade off: a larger pulley has increased bulk, weight and cost. For example, in a 1:1 haul, you gain about 7% efficiency going from a 1.5″ pulley to a 3.75″ pulley. How do you solve a […]
angular velocity, time rate at which an object rotates, or revolves, about an axis, or at which the angular displacement between two bodies changes. In the figure, this displacement is represented by the angle ฮธ between a line on one body and a line on the other. How do you solve angular velocity problems? How […]
During a collision, an object always encounters an impulse and a change in momentum. During a collision, the impulse which an object experiences is equal to its velocity change. The velocity change of two respective objects involved in a collision will always be equal. How do you solve bullet problems? How do you solve ballistic […]
Answer: When we hit the nail with a hammer, the nail and unsupported block together move forward as an single system. There is no force of reaction. When the block is rested against a support, the reaction of the support holds y the block in position and the nail is driven into the block. Why […]