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Take a hollow plastic ball (dia 3cm to 5cm) using a needle. Pass a thread of about 105 cm along a diameter of the ball.Tie a knot at one end. Hang the ball from a rigid support so that the ball is free to oscillate.Make a small hole (5mm dia) in the ball near the top.Fill it with sand and find its time period of oscillation. Empty the ball and fill it with steel balls/iron filings and repeat the experiment. Similarly carry out the experiment with common salt. Compare the time periods obtained in the above three cases.What do you find? Explain your finding.
a person exerts a force of 28n on the end of a door 84cm wide. what is the magnitude of the torque if the force is
An object weighing 340 Newton in air is immersed in water after being tied to a string connected to a balance. The scale now reads 250 Newton, Compute what is the density of the oil
What inductor connected in series with a 200 Ohm resistor and a 20 pF capacitor will give a resonance frequency of 1000 Hz
You have a wire of length L = 2.1 m for making a square coil of a dc motor, Find the maximum torque exerted on the coil when the wire is used to make a single-turn square coil
Suppose a 0.3 kg mass on a spring tha has been compressed 0.10m has elastic potential energy of 1 J. What is the spring constant? Also, how much further must the spring be compressed to triple the elastic potential energy
A 0.347 kg particle slides around a horizontal track. The track has a smooth, vertical outer wall forming a circle with a radius of 1.59 m. What is the total number of revolutions the particle makes before stopping
There are 2 inclines A & B. Identical carts are placed on the top of each incline and release them from rest. Both inclines have the similar height and are friction less, but angles of the two incline are not the similar. Would carts acceleration ..
find the work done on the man by the gravitational force
An automobile tire has a radius of 0.430 m, and its center moves forward with a linear speed of v = 14.0 m/s. Determine the angular speed of the wheel
Early in the morning, when the temperature is 5.0° C, gasoline is pumped into a car's 41 L steel gas tank until it is full to the top. Later in the day the temperature rises to 27° C. Since the volume of gasoline increases more for a given temperatur..
a 10-cm-long wire is pulled along a u-shaped conducting rail in a perpendicular magnetic field. the total resistance of
A liquid (? = 1.65 g/cm3) flows through two horizontal sections of tubing joined end to end. In the first section the cross-sectional area is 10.0 cm2, the flow speed is 265 cm/s, and the pressure is 1.20 105 Pa.
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