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Q1. A rocket of mass m1 and m2 is launched with a velocity that's horizontal and vertical components are ux and uy. At the highest point in its path the rocket explodes into two parts of mass m1 and m2 that separate in a horizontal direction in the original plane of motion. Explain that the fragment strike the ground at a distance apart given by d= ux/uy((2(m1+m2)k/m1m2)) where k is the kinetic energy produced by the explosion.
Neglect air resistance, the mass of explosive any spinning motion of fragment and assume g is constant.
Q2. While standing on a bridge 45m above the ground, you drop a stone from rest. When the stone has fallen 4.90m, you throw a second stone straight down. What initial velocity should you give the second stone if they are both to reach the ground at the same instant? Take downward direction to be the negative direction.
The two blocks are on frictionless inclines and are in static equilibrium. The block on the left has a mass of 49 Kg, and the block on the right has a mass of n3 Kg. If the left incline has the length of n1 meters, and the right incline the length of..
What's the advantage of launching space vehicles from high flying aircraft in place of from the ground.
A steel beam is suspended completely under water by a cable that is attached to one end of the beam, so it hangs perpendicularly. Another identical beam is also suspended completely under water, but by a cable that is attached to the center of the be..
A 25.0g arrow is shot through a 7.8 cm apple. If the arrow enters the apple at 38.8 m/s and emerges with a speed of 30.10m/s in the same direction, what is the magnitude of force with which the apple has resisted the arrow.
A 282 kg log is pulled up a ramp by means of the rope that is parallel to the surface of the ramp. The ramp is inclined at 23.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.87, and the log has..
A 9.0 cm diameter wire coil is at first oriented so that its plane is perpendicular to a magnetic field of 0.67 T pointing up. During the course of 0.30 s, the field is changed to one of 0.25 T pointing down. What is the average induced emf in coil.
What least number of grooves is required for a grating
Find the power in sideband, total power, carrier power, carrier rms voltage and the peak voltages for carrier and sidebands of AM transmitter.
A small block with a mass of 0.120kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.70m/s. The cord is then pulled from ..
Suppose the gravitational force between two massive spheres is 100 N. If the distance between the spheres is doubled, what is the force between the masses.
Determine the coefficient of kinetic friction between the block & the table.
A steel ball of mass M is released from rest at point P. It follows a smooth curved rail to point Q and finally reaches point R with K.E. of 7J. The speed of the ball at point Q is 2MS-1 and the height between point P and the ground is 3m. Then find ..
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