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Define strength and explain why strength varies through a joints range of motion?
What is the angular momentum of the coin about a point .1 m from the line of motion?
A turn-table on a frictionless vertical axis has a radius of 1.5 m and a moment of rotational inertia of 150 kgm^2.
What quantities are conserved in each case? Find the final speed V of the mass when it hits the post for each case?
A particle of mass 50g moves under an attractive central force of magnitude 4r^3 dynes. The angular momentum is equal to l,000 g*cm/s.
On a horizontal, frictionless table, a mass M is attached to the free end of a spring with the other end fixed. Another mass, m, moving at velocity S.
A beam of electrons (m=9.11 x 10 (-31) negative thirty first power has an average speed of 1.3 x 10^8 (eigth power) m*s (-1) s to to the negative first power
A figure skater during her finale can increase her rotation rate from an initial rate of 1.12 revolutions every 1.88 s to a final rate of 3.15 revolutions.
A uniform cylinder, mass M= 12 kg, radius R= .36 m, is initially rotating about a vertical axis through its center at angular velocity wo= 6.6 rad/sec.
A block with a hole through the center can slide in and out along the rod. Initially, a small piece of wax holds the block 10.0 cm from the pivot.
Thomson's Experiment: Instead of turning off the electric field to determine the charge-to mass ratio, Thomson proceeded to switch off the magnetic field
A flywheel initially rotating at a speed of 800 rev/min, is brought to rest with uniform angular deceleration in 6’s
Using the physical conditions present in the universe during the era of recombination (T=3000 and pm=10^-18 kg/m^3)
Determine the magnitude and direction of the resultant linear acceleration of a point A on the flywheel 0.2 s before coming to rest.
A uniform solid sphere of radius 0.500 m and mass of 15.0kg turns counterclockwise about a vertical axis through its center.
Convert the following angles from degrees to radians, to three significant figures: a) 15°, b) 45°, c) 90° and d) 120°.
Prove that the total torque of the ring multiplied by the time interval found in part b is equal to the change in angular momentum, found in part a.
Considering Yukawa's hypothesis that the nuclear force should be due to the exchange of massive particles (that he called mesons)
What is the magnitude of its angular momentum (in kg.m^2/s) relative to the center of the racetrack?
What is the distance from the Earth to the star
Two equal weights of mass M each are connected by a cord passing over a frictionless pulley of mass mp and radius r.
As the drawing shows, a carpenter on a space station has constructed a 30.0 degree ramp. A rocket moves past the space station with a relative speed of 0.73c
How much work is required to bring a 2.00-kg mass, 4.00-cm radius uniform sphere from rest to a rotational speed of 30.0 revolutions per second.
Suppose a 60kg person stands at the edge of a 6.0m diameter circular platform, which is mounted on frictionless bearings.
The basic assumptions behind the Theory of Relativity are that the speed of light in a vacuum is a universal constant and that all motion and perception