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A block of mass M is attached to a spring ofspring constant k and is moving with constant speed in a horizontalcircle on a frictionless table. You measure that the time it takesthe mass to make one complete circle is T seconds. One end of thespring is secured at the center of the circle and the other end isattached to the mass. The spring has a length L when it isunstretched. The spring stretches an additional length l while themass is rotating so that its total length (and also the radius ofthe circular motion) is now L+l. The goal is to calculate l interms of the other quantities.(a) What is the speed of the mass?(b) What is the acceleration of the mass?(c) What force is needed to create this acceleration?(d) What is the magnitude of the force exerted by the spring?Express your answer in terms of k anda length or lengths.
Three applied forces, F1= 20.0 N, F2= 40.0 N and F3= 10.0 N act on an object with a mass of 2.00 kg which can move along an inclined plane. What is the amount of work done by the gravitational force as the object moves up the inclined plane
How many conduction electrons are there in a 3.50 mm diameter gold wire that is 50.0 cm long
Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient
Since it is a known fact that light transmits energy and that bright lights transmits more energy than dim light, do interference effects violate conservation of energy and why?
A thin glass rod forms a semicircle of radius r = 3.03 cm. Charge is uniformly distributed along the rod, with +q = 1.05 pC in the upper half and -q = -1.05 pC in the lower half
Suppose we are on a space ship generating a beam of electrons. In our reference frame, the electrons are traveling in the +x direction with a speed of 0.87c. Find the speed of the electrons in the Earth's reference frame
X-rays having an energy of 250 keV undergo Compton scattering from a target. Find the Compton shift at this angle
a uniform 2000 kg beam 10 m long supports a 500 kg weight 3 m for the right support. calculate the forces in each of the vertical support columns
q1. a 484g oscillator has a speed of 121 cms when its displacement is 2.10 cm and 56.0 cms when its displacement is
A stone is dropped into a well. The sound of the splash is heard 2.30 s later. What is the depth of the well
A constant force of magnitude F makes an angle ? (measured counterclockwise) with the positive x direction as it acts on an object of mass m moving in the xy plane. How much work is done on the object by the force
The magnetic field in an electromagnetic wave has a peak value given by B = 2.1uT, Find the peak intensity
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