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Classical Mechanics
A mechanical process transforms rotational motion and potential energy into thermal energy.
In the start of this process, an object of mass 2kg and momentum of inertia 2km/m2 moves at an initial angular speed of of 12Hz, undergoes a displacement of 5m [Down] while being subject to Earth’s normal gravity 9.8m/s2 [down]. Through this process, 20 J of thermal energy is produced.
a. Determine the FINAL ANGULAR SPEED of this process assuming the energy is conserved in this process (100% efficient)
b. How efficient would this process be at converting just potential energy into thermal energy, assuming that the potential energy and thermal energy remain unchanged?
In the start of this process, an object of mass 2kg and momentum of inertia 2km/m2 moves at an initial angular speed of of 12Hz, undergoes a displacement of 5m [Down] while being subject to Earth’s normal gravity 9.8m/s2 [down]. Through this process, 20 J of thermal energy is produced.
a. Determine the FINAL ANGULAR SPEED of this process assuming the energy is conserved in this process (100% efficient)
b. How efficient would this process be at converting just potential energy into thermal energy, assuming that the potential energy and thermal energy remain unchanged?
Classical Mechanics
a jet of water of cross sectional area A and velocity V strikes normally on a stationery flat plates.the mass per unit volume of water is Q by dimensional analysis show that an expression for the force exerted by the jet against the plate is given by KAVQ
Classical Mechanics
a car going around a circular racetrack of radius 100m at 20 m/s2 experiences an acceleration of 4m/s2. what would be the acceleration if the radius of the track was increased to 200m?
Classical Mechanics
Four protons form a square of side length a . what is the electric potential in the center of the square ?
Classical Mechanics
A 500g wooden block can slide down an inclined track uniformly when the inclination is 28 ° from the horizontal. What is the magnitude of the friction force?
Classical Mechanics
A fan rotating at 3 rev/s is switched off what is it's angular acceleration in rev/² when it stops?
Classical Mechanics
To what temperature must a given mass of nitrogen at 0⁰c be heated so that both its volume and pressure will be doubled?
Classical Mechanics
To what temperature must a given mass of nitrogen at 0⁰c be heated so that both its volume and pressure will be doubled?
Classical Mechanics
A trolley with mass m1 of 3.3 kg is connected to a light string with a weight of mass m2 of 2.2 kg.
The cord runs through a pulley (a small wheel where the cord runs freely)
a) Calculate the vehicle acceleration
b) Calculate the clamping force in the card
The cord runs through a pulley (a small wheel where the cord runs freely)
a) Calculate the vehicle acceleration
b) Calculate the clamping force in the card
Classical Mechanics
A trolley with mass m1 = 0.8 kg and speed v1 = 4.0 m / s collide with another stationary trolley with mass m2 = 4.0 kg. Immediately after the collision, carriage 1 bounces back at the speed u1 = 0.5 m / s.
a) Calculate the speed of trolley 2 immediately after collision 0 / CP / AB
(b) What proportion of trolley 1 movement energy is converted to other forms of energy during the collision 0 / CP / 0
a) Calculate the speed of trolley 2 immediately after collision 0 / CP / AB
(b) What proportion of trolley 1 movement energy is converted to other forms of energy during the collision 0 / CP / 0
