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Q1. An explosive charge imparts a velocity of 10,350 feet per second to a mortar as it exits the muzzle of mortar. If the mortar is elevated at 80 degrees what are the horizontal and vertical velocities on the mortar shell?
Q2. Block A is on an incline that makes an angle of 30o above the horizontal. It is attached via a cord over a frictionless pulley at the top of the incline to a second block, B that is hanging vertical above the ground. The mass of A is 2.6 kg and the mass of B is 2.2 kg. The coefficient of friction between A and the incline is μk = 0.180. The picture would be similar to that for problem 6.37 on page 180. A) Illustrate free-body diagrams for all the forces acting on bodies A and B. B) Write down the net force equations for both blocks and solve for the acceleration of block B.
After the Sun exhausts its nuclear fuel, its ultimate fate might be to collapse to a white dwarf state. In this state, it would have about the same mass as it has now, but its radius would be equal to the radius of the Earth.
What minimum horsepower must a motor have to be capable to drag a 290 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
At one instant a bicyclist is 75m due east of a park's flagpole, going due south with a speed of 13.0 m/s. Then, 10s later, the cyclist is 65 m due north of flagpole, going due east with a speed of 20.0 m/s.
A gun is fired vertically into a 2.00 kg block of wood at rest straight above it. If the bullet has a mass of 21.0 g and a speed of 198 m/s, how high would the block rise into the air after the bullet becomes embedded in it.
Find out the acceleration of the sled and child
find out the magnitude of an acceleration
What is the magnitude of the normal force that each brake pad applies to the rim . find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
Consider the four masses. Find the total gravitational potential energy of this system. How does your answer to part A change if all the masses in the system are doubled.
A 0.350 m rod with uniform mass distribution runs along the x axis with its left end at the origin. A 1.80 m rod with uniform mass distribution runs along y axis with its top end at the origin. Find out the coordinates of the center of gravity for..
A heavy piece of hanging sculpture is suspended by a 146.0 cm long, 8.03 gm wire. When the wind blows hard, wire hums at its fundamental frequency of 113.0 Hz. What is the mass of the sculpture (in kg) assume that the local acceleration due to gravit..
Speedboat A negotiates a curve whose radius is 115 m. Speedboat B negotiates a curve whose radius is 194 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60 percent of the energy usage, what altitude change can a rider achieve while driving in hilly terrain, if the rider and scooter..
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