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A diver of mass 68 kg stands at the end of a uniform diving board of mass 16 kg and length 4:5 m. The board is attached by two pedestals that are 1:5 m apart, as shown in the gure. (a) Sketch a force diagram showing all external forces acting on the system diver plus diving board. (b) Calculate the magni- tudes of the forces exerted by the pedestals on the diving board. (c) For each pedestal specify whether it is under tension or compression.
A boat floating in fresh water displaces water weighing 33.0 kN. What is the weight of the water that this boat displaces
A box slides down a 25° ramp with an acceleration of 1.070m/s2. Resolve the coefficient of kinetic friction between box and ramp.
A 75-W, 120-V bulb is connected in parallel with a35-W, 120-V bulb. What is the net resistance
The speed of a projectile when it reaches its maximum height is 0.38 times its speed when it is at half its maximum height
In the isothermal compression of an ideal gas, the volume occupied by the gas is decreasing, but the temperature of the gas remains constant. In order for this to happen, A. heat must enter the gas. B. heat must exit the gas. C. no heat exchange shou..
find the angular displacement of the propeller.
What is size of the gravitational force on the moon
Vinny (m= 40 kg) is at rest on ice ( which we'll assume is frictionless) holding a gun ( m=1 kg). Each bullet in the gun has a mass of 20 grams and fires at 400 m/s. How much chemical energy was stored in the unfired bullets
A place-kicker must kick a football from a point 36.0 m (about 40 yards) from the goal. By how much does the ball clear or fall short (vertically) of clearing the crossbar
A boat has a mass of 6800 kg. Its engines generate a drive force of 4050 N, due west, while the wind exerts a force of 860 N, What is the magnitude and direction of the boat's acceleration
Two people are standing on a 2.19-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. How far does the platform move before coming to rest again
What is the fundamental resonant frequency of the air column if the velocity of sound in the air is 340 m/s.
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