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A 25 Newton block rests on a horizontal surface. The coefficients of kinetic and static friction between the surface and the block are μk= 0.60 and μs = 0.80. A horizontal string is attached to the block and a constant tension T is maintained in the string. Find the force of friction acting on the block for each of the following value of T =15 N?
A body of mass 6 kg is acted upon by a force which causes a displacement in it given by x = t2/4 metre where t is the time in seconds
A swing is made from a rope that will tolerate a maximum tension of 8.0 102 N without breaking. What is the mass of the heaviest person
Blocks with masses of 2, 3, and 5 are lined up in a row on a frictionless table. All three are pushed forward by a 59 force applied to the 2 block. How much force does the 3.00 kg black exert on the 5 kg block.
The figure shows tow disks, A and B, commented together, that are rotating with angular acceleration, α. The radius of the small disk B is 2/3 the radius of the larger disk. Compute the h ratio of the tangential velocity of a point on the rim of disk..
a boy on a roof throws one ball downward and an identical ball upward. the ball thrown downward hits the ground with 100 J of kinetic energy. what is the kinetic energy of the second just before it hits the ground
A small metal ball is given a negativecharge, then brought near (i.e., within about 1/10 the length ofthe rod) to end A of the rod . What happens to end A of the rodwhen the ball approaches it closely this first time?
an object with a height of 46 cm is placed 2.4 m in front of a concave mirror with a focal length of .5 m. find the
a glaucous winged gull ascending straight upward at 5.20ms drops a shell when it is 12.5 m above the ground.a what are
comet orbits are highly elliptical. a periodic comet orbiting a two solar mass star with an orbital period of 200 years
The distance between atoms in a solid is typically around 2.0 x 10-10 m What is the wavelength of an electron with a kinetic energy of 110 eV
Two bodies oscillate in SHM with the same amplitude (7.90 cm), Find the displacement of A when the displacement of B is 7.90 cm
A diver is practicing for a coming game. The height of the diving tower is 10 m (from the top of board down to water surface), What is the angle at which the diver enters the water
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