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A 180 g mass on a smooth surface is attached to a horizontal spring with a spring constant 8 N m-1. The mass is set to oscillate by pulling it 5.0 cm from its equilibrium position and released.
a) Calculate the period of the oscillation.
[ 1 mark ]
b) Calculate the maximum speed of the mass.
[ 2 marks ]
c) Calculate the maximum acceleration of the mass
[ 2 marks ]
The distance between two successive crests in a wave is 1.25 m, and the source generates 15 crests in 5.0 s. What is the speed of the wave?
A ship with a mass of 52 000 metric tons is capable of producing a thrust force of 25 800 kN while a total resistive force of 5 000 kN is against it, what is the acceleration of the ship? *
How much load is needed to elongate a steel wire to 0.5 %of its original length ? The diameter of the wire is 2mm and youngest modulus of the material of the wire is 20×10^10 N/m^2
259L oil of compressibility k=20×10^-6 atm^-1is subjected to a hydraulic press. Find the decrease in the value of the oil when it is subjected to pressure 1.6×10^7
An object that is 15 cm tall is placed 18 cm from a concave mirror. The real image is formed 20 cm from the mirror. What is the focal length of the concave mirror? Use the formula: f = dodi/do +di
Two parallel straight wires 53.0 cm apart carry currents in opposite directions. Current = 10.0 A is out of the page, and /2 = 8.0 A is into the page. Determine the magnitude and direction of the magnetic field halfway between the two wires.
A piano of mass 350 kg moved up a rough plane which is inclined to the horizontal ground at 25° as shown in Figure 3. It is pushed by a man with force of magnitude 1700 N parallel to the plane. The coefficient of frictional force for the surface is 0.30. After the piano has moved through 3.5 m, calculate the work done by each force acting on the piano and the net work done on the piano.
Battery A 12.6 volts with an internal resistance of 0.2 ohm and battery B 12.2 volts with an internal resistance of 0.3 ohm are delivering a current through the load RL=10 ohms. Find the voltage across the load.
Three resistor are connected in parallel across 100-volt supply. One resistor absorb 1600 watts and the second 1200 watts. The total energy used by the whole circuit in 10 minutes is 276x10^4 joules. Find resistance of the third resistor.
