What force causes a car to come to a stop? It is the friction force that keeps the tires from sliding on the road. By the same token, it is friction that makes the car come to a stop when the brakes are applied. So, it is the force of friction that makes a car…

Nut Cracker. A nutcracker is a prominent example of a second-class lever simple machine. Seesaw. Seesaws demonstrate the working of a first-class lever simple machine in the simplest possible way. Scissors. Plier. Stapler. Wheelbarrow. Human body. Broom. What is an example of a lever in physics? Example: Our hand pushing an object or seesaws, crowbars.…

This means that any object, regardless of size or mass, will slide down a frictionless ramp with the same acceleration (a fraction of g that depends on the angle of the ramp). How do you do ramp problems in physics? How do you find the acceleration of a frictionless ramp? For a frictionless incline of…

The International Mathematical Olympiad (IMO) How do you qualify for Physics Olympiad? School students (usually of standards 11 and 12 albeit special cases prevail) first need to qualify the National Standard Examination in Physics (NSEP) held on the last (or second last) Sunday of November of the preceding year. What topics are in Physics Olympiad?…

The Carnot cycle achieves maximum efficiency because all the heat is added to the working fluid at the maximum temperature. What is the formula for heat engine? The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided…

The proper power formula is Power = Force in lifting a load * speed of lifting the load. How do you calculate power in an elevator? The work done by the elevator over the 100 meters is easily calculable: W = mgh = (1000)(9.8)(100) = 9.8×105 Joules. The total time of the trip can be…

1· Try to move an object. 2· Pushing a car and a truck. 3· Racing Cars. 4· Rocket launch. 5· Kick the ball. 6· Car crash. 7· Two people walking. 8· Object thrown from a height. How do you solve Newton’s second law problem? What is an example of 2 law of motion? Newton’s second…

The impulse experienced by the object equals the change in momentum of the object. In equation form, F • t = m • Δ v. In a collision, objects experience an impulse; the impulse causes and is equal to the change in momentum. How do you solve impulse problems in physics? What is impulse during…

B Write the equilibrium constant expression for the reaction. Substitute the known K value and the final concentrations to solve for x. C Calculate the final concentration of each substance in the reaction mixture. Check your answers by substituting these values into the equilibrium constant expression to obtain K. How do you solve torque problems…

An object in free fall experiences an acceleration of -9.8 m/s/s. (The – sign indicates a downward acceleration.) Whether explicitly stated or not, the value of the acceleration in the kinematic equations is -9.8 m/s/s for any freely falling object. How do you solve free fall physics problems? What forces are acting on a person…

How do you reach maximum height? Eat a balanced diet. Use supplements with caution. Get the right amount of sleep. Stay active. Practice good posture. Use yoga to maximize your height. How do you find maximum height in physics free fall? y = v 0 2 − 2 g = ( 2.0 × 10 2…

Rolling without slipping is a combination of translation and rotation where the point of contact is instantaneously at rest. The object will also move in a straight line in the absence of a net external force. How do you solve rolling without slipping? What causes slipping in physics? If the object’s center of rotation moves…

When the meter stick alone is in equilibrium there are two forces acting on it, the force of gravity downward and the force of the fulcrum upward. Since the force of the fulcrum produces no torque about the balance axis it follows that the force of gravity also can produce no net torque about that…

How do you solve frictional force problems? Steps for Solving Static Friction Problems Step 1: Identify the coefficient of static friction between the surface and the object. Step 2: Find the normal force acting on the object. Step 3: Find the maximum value of the static friction by multiplying the coefficient of static friction and…

What does displacement mean? If an object moves relative to a reference frame—for example, if a professor moves to the right relative to a whiteboard, or a passenger moves toward the rear of an airplane—then the object’s position changes. This change in position is known as displacement. How do you solve displacement problems? What is…

Step 1: Identify the density of the fluid (ρ) and the depth of the object (h) . Step 2: Plug the values for density and depth into the equation for gauge pressure: PG=ρhg P G = ρ h g , where g=9.81ms2 g = 9.81 m s 2 is the acceleration due to gravity on…

Much of physics is the study of energy and its transformation, and energy lies at the heart of important environmental issues. Climate is shaped by how the energy of the Sun affects movement of the atmosphere and oceans and how they in turn distribute energy around the world. What are the 5 major environmental problems…

K = 1 2 I ω 2 . K = 1 2 I ω 2 . We see from this equation that the kinetic energy of a rotating rigid body is directly proportional to the moment of inertia and the square of the angular velocity. What is energy moment of inertia? The moment of inertia…

Install CFL Lights. Lower the Room Temperature. Fix Air Leaks. Use Maximum Daylight. Get Energy Audit Done. Use Energy Efficient Appliances. Drive Less, Walk More and Carpooling. Switch Off Appliances When Not in Use. How can we solve the conservation of energy problems in physics? Steps for Solving Conservation of Energy Problems Step 1: Make…

How do you solve a loop loop in physics? First, we need to know the minimum speed at the top of the loop for the mass to remain on the track. Step 1: Draw diagram and coordinate system. Step 3: At the top of the loop, the two forces are N and mg, both acting…